alembic/versions/0100_drop_always_on_tier.py

@@ -0,0 +1,96 @@
+"""drop the always-on tier: rules.tier, rulebooks.always_on, the exclusions table
+
+Revision ID: 0100
+Revises: 0099
+Create Date: 2026-09-11
+
+Milestone 394. Every rule now reaches a session by retrieval — because
+something it is about to do made the rule relevant — and the machinery that
+delivered rules unconditionally goes with it.
+
+WHAT GOES, AND WHERE IT CAME FROM
+
+  - ``rules.tier`` and its ``ck_rules_tier`` CHECK (migration 0088). Dropping
+    the column takes the constraint with it. Rule 36 is about ADDING a value to
+    a live whitelist, which needs DROP + ADD in the same migration; it does not
+    speak to removing the column outright, and saying so here is cheaper than
+    the next reader wondering whether it was forgotten.
+  - ``rule_versions.tier`` (migration 0098). A version records what a rule
+    SAID; with no tier on a rule there is nothing for a snapshot to carry.
+  - ``rulebooks.always_on`` (migration 0058). A rulebook reaches a project by
+    subscription now, and by nothing else.
+  - ``project_rulebook_exclusions`` (migration 0085). It recorded a project's
+    opt-out of an always-on rulebook. Opting out of something that no longer
+    binds you is not a state that can exist — declining a rulebook is
+    expressed by not subscribing to it.
+
+IRREVERSIBLE, AND THE DOWNGRADE SAYS SO RATHER THAN PRETENDING
+
+The downgrade recreates the columns and the table with their DEFAULTS. It
+cannot restore WHICH rules were always-on, which rulebooks bound every project,
+or which projects had opted out — that information is in what this drops.
+
+That distinction is the one this repo keeps insisting on: a value invented to
+fill a hole is not a measurement. So a downgraded database is structurally able
+to run the old code and is NOT the database the old code was running against —
+every rule comes back at the ``always_on`` default, which for the tier column
+happens to mean "binding", the safe direction to be wrong in.
+
+Anyone who needs the real prior state restores a backup taken before this ran.
+"""
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0100"
+down_revision = "0099"
+branch_labels = None
+depends_on = None
+
+_TIERS = ("always_on", "conditional")
+
+
+def _in_list(column: str, values: tuple[str, ...]) -> str:
+    return f"{column} IN (" + ", ".join(f"'{v}'" for v in values) + ")"
+
+
+def upgrade() -> None:
+    op.drop_table("project_rulebook_exclusions")
+    op.drop_column("rulebooks", "always_on")
+    op.drop_column("rule_versions", "tier")
+    # The CHECK goes with the column it constrains; naming it here would be a
+    # second drop of the same object.
+    op.drop_column("rules", "tier")
+
+
+def downgrade() -> None:
+    """Structure only. See the module docstring — the values are gone."""
+    op.add_column(
+        "rules",
+        sa.Column("tier", sa.Text(), nullable=False, server_default="always_on"),
+    )
+    op.create_check_constraint("ck_rules_tier", "rules", _in_list("tier", _TIERS))
+    op.add_column("rule_versions", sa.Column("tier", sa.Text(), nullable=True))
+    op.add_column(
+        "rulebooks",
+        sa.Column(
+            "always_on", sa.Boolean(), nullable=False,
+            server_default=sa.text("false"),
+        ),
+    )
+    op.create_table(
+        "project_rulebook_exclusions",
+        sa.Column(
+            "project_id", sa.BigInteger(),
+            sa.ForeignKey("projects.id", ondelete="CASCADE"),
+            primary_key=True, nullable=False,
+        ),
+        sa.Column(
+            "rulebook_id", sa.BigInteger(),
+            sa.ForeignKey("rulebooks.id", ondelete="CASCADE"),
+            primary_key=True, nullable=False,
+        ),
+        sa.Column(
+            "created_at", sa.DateTime(timezone=True),
+            server_default=sa.text("now()"), nullable=True,
+        ),
+    )

frontend/src/api/inception.ts

@@ -2,7 +2,6 @@
 import { apiGet, apiPost } from "@/api/client";
 
 export interface InceptionChoices {
-  exclude_always_on_rulebooks: number[];
   subscribe_rulebooks: number[];
   design_system_id: number | null;
   seed_systems: boolean;
@@ -16,9 +15,7 @@ export interface InceptionRecord {
 }
 
 export interface InceptionDefaults {
-  always_on_rulebooks: { id: number; title: string }[];
+  rulebooks: { id: number; title: string }[];
-  other_rulebooks: { id: number; title: string }[];
-  excluded_always_on: { id: number; title: string }[];
   subscribed_rulebooks: { id: number; title: string }[];
   design_system_id: number | null;
   design_systems: { id: number; title: string }[];
@@ -32,7 +29,7 @@ export interface InceptionDecision {
 }
 
 export const emptyChoices = (): InceptionChoices => ({
-  exclude_always_on_rulebooks: [], subscribe_rulebooks: [], design_system_id: null, seed_systems: false,
+  subscribe_rulebooks: [], design_system_id: null, seed_systems: false,
 });
 
 export const fetchInceptionDefaults = (projectId: number) =>

frontend/src/api/rulebooks.ts

@@ -3,7 +3,6 @@ import type { RecordUsage } from "@/types/usage";
 import { apiGet, apiPost, apiPatch, apiDelete } from "@/api/client";
 
 /** How a rule reaches a session (milestone 307). */
-export type RuleTier = "always_on" | "conditional";
 
 /**
  * A typed edge between two rules. Each kind exists because its absence forced
@@ -26,7 +25,6 @@ export interface Rulebook {
   owner_user_id: number;
   title: string;
   description: string;
-  always_on: boolean;
   created_at: string | null;
   updated_at: string | null;
 }
@@ -49,12 +47,6 @@ export interface Rule {
   statement: string;
   /** WHEN this rule fires — the trigger, not the instruction. */
   when_to_apply: string;
-  /**
-   * always_on preloads into every session; conditional is reachable and
-   * surfaced when its trigger fires. A rule with no tier set behaves as
-   * always_on, which is how every rule behaved before this existed.
-   */
-  tier: RuleTier;
   why: string;
   how_to_apply: string;
   /**
@@ -87,7 +79,6 @@ export interface RuleHeader {
   title: string;
   statement: string;
   topic_id: number | null;
-  tier: RuleTier;
   /** A date (YYYY-MM-DD), not a timestamp. */
   updated_at: string | null;
   when_to_apply?: string;
@@ -134,7 +125,6 @@ export interface ApplicableRules {
   truncated: boolean;
   subscribed_rulebooks: { id: number; title: string }[];
   /** Always-on rulebooks this project opted out of at inception (milestone 297). */
-  excluded_always_on: { id: number; title: string }[];
 }
 
 // ── Rulebooks ───────────────────────────────────────────────────────
@@ -152,7 +142,7 @@ export async function createRulebook(data: { title: string; description?: string
   return apiPost("/api/rulebooks", data);
 }
 
-export async function updateRulebook(id: number, data: Partial<{ title: string; description: string; always_on: boolean }>): Promise<Rulebook> {
+export async function updateRulebook(id: number, data: Partial<{ title: string; description: string }>): Promise<Rulebook> {
   return apiPatch(`/api/rulebooks/${id}`, data);
 }
 
@@ -207,7 +197,6 @@ export interface RuleWrite {
   title: string;
   statement: string;
   when_to_apply: string;
-  tier: RuleTier;
   why: string;
   how_to_apply: string;
   order_index: number;
@@ -258,7 +247,6 @@ export interface RuleVersion {
   why?: string;
   how_to_apply?: string;
   when_to_apply?: string;
-  tier?: string;
   verify_with?: string;
   expires_when?: string;
 }
@@ -323,16 +311,6 @@ export async function unsuppressTopicForProject(projectId: number, topicId: numb
   return apiDelete(`/api/projects/${projectId}/suppressions/topics/${topicId}`);
 }
 
-// ── Always-on exclusions (milestone 297) ────────────────────────────────────
-
-export async function excludeAlwaysOnRulebook(projectId: number, rulebookId: number): Promise<void> {
-  await apiPost(`/api/projects/${projectId}/exclusions/rulebooks/${rulebookId}`, {});
-}
-
-export async function includeAlwaysOnRulebook(projectId: number, rulebookId: number): Promise<void> {
-  await apiDelete(`/api/projects/${projectId}/exclusions/rulebooks/${rulebookId}`);
-}
-
 
 /**
  * One row of the staleness sweep. Unlike RuleHeader this carries the CHECK
@@ -343,7 +321,6 @@ export interface RuleVerificationRow {
   id: number;
   title: string;
   statement: string;
-  tier: RuleTier;
   topic_id: number | null;
   project_id: number | null;
   when_to_apply: string;
@@ -366,12 +343,10 @@ export interface RuleVerificationRow {
  */
 export async function listRulesDueForVerification(opts: {
   olderThanDays?: number;
-  tier?: RuleTier;
   neverOnly?: boolean;
 } = {}): Promise<{ rules: RuleVerificationRow[]; total: number }> {
   const q = new URLSearchParams();
   if (opts.olderThanDays) q.set("older_than_days", String(opts.olderThanDays));
-  if (opts.tier) q.set("tier", opts.tier);
   if (opts.neverOnly) q.set("never_only", "true");
   const qs = q.toString();
   return apiGet(`/api/rules-due-for-verification${qs ? `?${qs}` : ""}`);

frontend/src/assets/rules-shared.css

@@ -20,6 +20,15 @@
    milestone (tier, then verification) and were byte-identical; a third would
    have drifted. The pane's italic serif title is inherited by anything inside
    it, so the chip resets family and style explicitly. */
+/* A rule with no trigger cannot be retrieved, and since milestone 394
+   retrieval is the only delivery — so this marks a rule that will never
+   reach a session. Warning rather than error: the rule is not broken, it is
+   unreachable, and the fix is one field away. */
+.rule-chip-inert {
+  color: var(--fs-warning-fg);
+  background: color-mix(in srgb, var(--fs-warning) 12%, var(--fs-surface-raised));
+}
+
 .rule-chip {
   margin-left: 0.4rem;
   font-family: var(--fs-font-body);

frontend/src/components/InceptionCard.vue

@@ -28,7 +28,6 @@ const emit = defineEmits<{
 }>();
 
 const local = ref<InceptionChoices>(props.choices ? { ...props.choices } : emptyChoices());
-const alwaysOn = ref<{ id: number; title: string }[]>([]);
 const others = ref<{ id: number; title: string }[]>([]);
 const designSystems = ref<{ id: number; title: string }[]>([]);
 const systemsCount = ref(0);
@@ -47,21 +46,18 @@ async function load() {
   try {
     if (props.mode === "decide" && props.projectId) {
       const d: InceptionDefaults = await fetchInceptionDefaults(props.projectId);
-      alwaysOn.value = d.always_on_rulebooks;
+      others.value = d.rulebooks;
-      others.value = d.other_rulebooks;
       designSystems.value = d.design_systems;
       systemsCount.value = d.systems;
       // Start from what stands today so "record" without changes is a true inherit-all.
       local.value = {
-        exclude_always_on_rulebooks: d.excluded_always_on.map((r) => r.id),
         subscribe_rulebooks: d.subscribed_rulebooks.map((r) => r.id),
         design_system_id: d.design_system_id,
         seed_systems: false,
       };
     } else {
       const [rulebooks, ds] = await Promise.all([listRulebooks(), fetchDesignSystems()]);
-      alwaysOn.value = rulebooks.filter((r) => r.always_on).map((r) => ({ id: r.id, title: r.title }));
+      others.value = rulebooks.map((r) => ({ id: r.id, title: r.title }));
-      others.value = rulebooks.filter((r) => !r.always_on).map((r) => ({ id: r.id, title: r.title }));
       designSystems.value = ds.design_systems.map((d) => ({ id: d.id, title: d.title }));
     }
   } catch (e: unknown) {
@@ -71,13 +67,6 @@ async function load() {
   }
 }
 
-function inherits(id: number): boolean {
-  return !local.value.exclude_always_on_rulebooks.includes(id);
-}
-function toggleInherit(id: number) {
-  const list = local.value.exclude_always_on_rulebooks;
-  local.value.exclude_always_on_rulebooks = list.includes(id) ? list.filter((x) => x !== id) : [...list, id];
-}
 function subscribed(id: number): boolean {
   return local.value.subscribe_rulebooks.includes(id);
 }
@@ -87,7 +76,7 @@ function toggleSubscribe(id: number) {
 }
 
 const nothingToDecide = computed(
-  () => !alwaysOn.value.length && !others.value.length && !designSystems.value.length,
+  () => !others.value.length && !designSystems.value.length,
 );
 
 async function record() {
@@ -118,16 +107,11 @@ onMounted(load);
     <p v-if="loading" class="inception-muted">Loading…</p>
     <p v-else-if="error" class="error-msg">{{ error }}</p>
     <template v-else>
-      <div v-if="alwaysOn.length" class="inception-group">
-        <h4>Always-on rulebooks</h4>
-        <p class="inception-muted">Checked = inherits. Uncheck to exclude a rulebook for this project only.</p>
-        <label v-for="rb in alwaysOn" :key="rb.id" class="inception-choice">
-          <input type="checkbox" :checked="inherits(rb.id)" @change="toggleInherit(rb.id)" />
-          <span>{{ rb.title }}</span>
-        </label>
-      </div>
       <div v-if="others.length" class="inception-group">
         <h4>Subscribe to rulebooks</h4>
+        <p class="inception-muted">
+          A rulebook binds this project only if it is subscribed — nothing is inherited automatically.
+        </p>
         <label v-for="rb in others" :key="rb.id" class="inception-choice">
           <input type="checkbox" :checked="subscribed(rb.id)" @change="toggleSubscribe(rb.id)" />
           <span>{{ rb.title }}</span>

frontend/src/components/rules/ProjectRulesTab.vue

@@ -13,7 +13,6 @@ import {
   unsuppressRuleForProject,
   suppressTopicForProject,
   unsuppressTopicForProject,
-  includeAlwaysOnRulebook,
 } from "@/api/rulebooks";
 import type { ApplicableRules, Rulebook } from "@/api/rulebooks";
 
@@ -32,7 +31,7 @@ const ruleDetails = ref<Record<number, {
 const showProjectRuleForm = ref(false);
 const newProjectRule = ref({
   title: "", statement: "", why: "", how_to_apply: "",
-  when_to_apply: "", tier: "always_on" as "always_on" | "conditional",
+  when_to_apply: "",
 });
 
 async function load() {
@@ -49,11 +48,6 @@ async function subscribe(rulebookId: number) {
   await load();
 }
 
-async function includeBack(rulebookId: number) {
-  await includeAlwaysOnRulebook(props.projectId, rulebookId);
-  await load();
-}
-
 async function unsubscribe(rulebookId: number) {
   if (!confirm("Unsubscribe from this rulebook for this project?")) return;
   await unsubscribeProject(props.projectId, rulebookId);
@@ -134,11 +128,10 @@ async function submitProjectRule() {
     why: newProjectRule.value.why.trim() || undefined,
     how_to_apply: newProjectRule.value.how_to_apply.trim() || undefined,
     when_to_apply: newProjectRule.value.when_to_apply.trim() || undefined,
-    tier: newProjectRule.value.tier,
   });
   newProjectRule.value = {
     title: "", statement: "", why: "", how_to_apply: "",
-    when_to_apply: "", tier: "always_on",
+    when_to_apply: "",
   };
   showProjectRuleForm.value = false;
   await load();
@@ -210,17 +203,6 @@ watch(() => props.projectId, load);
       </div>
     </section>
 
-    <section v-if="applicable.excluded_always_on?.length" class="excluded">
-      <h3>Excluded always-on rulebooks</h3>
-      <p class="excluded-note">Opted out at inception — these do not bind this project.</p>
-      <div class="chips">
-        <span v-for="rb in applicable.excluded_always_on" :key="rb.id" class="chip chip-excluded">
-          <a @click="openInRulesView(rb.id)">{{ rb.title }}</a>
-          <button class="chip-remove" @click="includeBack(rb.id)" aria-label="Include again" title="Include again">↩</button>
-        </span>
-      </div>
-    </section>
-
     <section class="project-rules">
       <div class="section-head">
         <h3>Project rules</h3>
@@ -246,22 +228,13 @@ watch(() => props.projectId, load);
         ></textarea>
         <textarea
           v-model="newProjectRule.when_to_apply"
-          placeholder="When to apply — the trigger, not the instruction"
+          placeholder="When to apply — the moment, in the words a session actually produces"
           rows="2"
         ></textarea>
-        <div class="tier-row">
+        <p v-if="!newProjectRule.when_to_apply.trim()" class="trigger-hint">
-          <label>
+          Without a trigger the rule will never reach a session — nothing is
-            <input v-model="newProjectRule.tier" type="radio" value="always_on" />
+          preloaded, so a rule arrives only when work matches what it names.
-            Always on
+        </p>
-          </label>
-          <label>
-            <input v-model="newProjectRule.tier" type="radio" value="conditional" />
-            Conditional
-          </label>
-          <span class="tier-hint">
-            Conditional if you had to name a system, an artifact or a moment to state the trigger.
-          </span>
-        </div>
         <textarea
           v-model="newProjectRule.why"
           placeholder="Why (optional) — the rationale"
@@ -405,14 +378,9 @@ watch(() => props.projectId, load);
 </template>
 
 <style scoped>
-.tier-row { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; font-size: 0.85rem; }
+.trigger-hint { flex: 1; min-width: 12rem; font-size: 0.75rem; color: var(--fs-text-tertiary); }
-.tier-row label { display: inline-flex; align-items: center; gap: 0.3rem; }
-.tier-row input { accent-color: var(--fs-accent); }
-.tier-hint { flex: 1; min-width: 12rem; font-size: 0.75rem; color: var(--fs-text-tertiary); }
 
 .excluded-note { margin: 0 0 0.5rem; color: var(--fs-text-tertiary); font-size: 0.85rem; }
-.chip-excluded { opacity: 0.8; text-decoration: line-through; }
-.chip-excluded .chip-remove { text-decoration: none; }
 .rules-tab { padding: 1rem; }
 h3 {
   font-size: 0.9em; opacity: 0.7; text-transform: uppercase; letter-spacing: 0.05em;

frontend/src/components/rules/RuleEditorSlideOver.vue

@@ -2,7 +2,6 @@
 import { computed, ref, watch, onMounted } from "vue";
 import { useRulebooksStore } from "@/stores/rulebooks";
 import { useCanonicalSystemsStore } from "@/stores/canonicalSystems";
-import type { RuleTier } from "@/api/rulebooks";
 import RuleHistoryPanel from "@/components/rules/RuleHistoryPanel.vue";
 
 const props = defineProps<{ ruleId: number | null; topicId: number | null }>();
@@ -13,7 +12,6 @@ const canon = useCanonicalSystemsStore();
 const title = ref("");
 const statement = ref("");
 const whenToApply = ref("");
-const tier = ref<RuleTier>("always_on");
 const systemIds = ref<number[]>([]);
 const why = ref("");
 const howToApply = ref("");
@@ -70,7 +68,6 @@ async function load() {
       title.value = r.title;
       statement.value = r.statement;
       whenToApply.value = r.when_to_apply || "";
-      tier.value = r.tier || "always_on";
       systemIds.value = (r.systems ?? []).map((sys) => sys.id);
       why.value = r.why || "";
       howToApply.value = r.how_to_apply || "";
@@ -81,7 +78,6 @@ async function load() {
     title.value = "";
     statement.value = "";
     whenToApply.value = "";
-    tier.value = "always_on";
     systemIds.value = [];
     why.value = "";
     howToApply.value = "";
@@ -100,7 +96,6 @@ async function save() {
     title: title.value,
     statement: statement.value,
     when_to_apply: whenToApply.value,
-    tier: tier.value,
     // Always sent, so clearing the last area actually clears it — the server
     // reads a list as "these ARE the areas now".
     system_ids: systemIds.value,
@@ -147,38 +142,19 @@ watch(() => props.ruleId, load);
         Statement <span class="required">*</span>
         <textarea v-model="statement" rows="3" placeholder="The actionable instruction (1-2 sentences)." />
       </label>
-      <label>
+      <label :class="{ 'trigger-missing': !whenToApply.trim() }">
-        When to apply
+        When to apply <span class="required">*</span>
         <textarea
           v-model="whenToApply"
-          rows="2"
+          rows="3"
-          placeholder="The trigger, not the instruction — “before any git push”, “when a release is being cut”."
+          placeholder="The moment, in the words a session actually produces — “about to run git push with an earlier CI run unread”, not “when pacing actions”."
         />
       </label>
-
+      <p v-if="!whenToApply.trim()" class="trigger-warning">
-      <fieldset class="tier">
+        <strong>Without this, the rule will never reach a session.</strong>
-        <legend>How it reaches a session</legend>
+        Nothing is preloaded: a rule arrives when what someone is doing matches
-        <label class="tier-opt">
+        its trigger, so an empty trigger leaves the rule findable by nobody.
-          <input v-model="tier" type="radio" value="always_on" />
+      </p>
-          <span>
-            <strong>Always on</strong>
-            — loaded into every session.
-          </span>
-        </label>
-        <label class="tier-opt">
-          <input v-model="tier" type="radio" value="conditional" />
-          <span>
-            <strong>Conditional</strong>
-            — arrives when its trigger fires.
-          </span>
-        </label>
-        <p class="tier-test">
-          The test: can you name the trigger <em>without</em> naming a system, an artifact type
-          or a moment? If the honest answer is “whenever you are working”, it is always on.
-          Conditional costs nothing when it is irrelevant, which is what lets it be as long as
-          it needs to be.
-        </p>
-      </fieldset>
 
       <fieldset v-if="canon.catalog.length" class="areas">
         <legend>Areas this rule is about</legend>
@@ -190,14 +166,14 @@ watch(() => props.ruleId, load);
           />
           <span>{{ entry.name }}</span>
         </label>
-        <p class="tier-test">
+        <p class="field-note">
           What lets this rule reach a project working in that area.
         </p>
       </fieldset>
 
       <fieldset class="check">
         <legend>Can this rule go stale?</legend>
-        <p class="tier-test intro">
+        <p class="field-note intro">
           Most rules are <em>decisions</em> — they have no truth value and change only when you
           change them. Leave this empty for those. Fill it in when the rule asserts a
           <em>fact</em> about something outside your control, because those go false quietly.
@@ -226,7 +202,7 @@ watch(() => props.ruleId, load);
             <button type="button" :disabled="verifying" @click="verify(false)">No longer true</button>
           </span>
         </div>
-        <p v-if="savedCheck" class="tier-test">
+        <p v-if="savedCheck" class="field-note">
           Record this after actually running the check, never on the strength of the rule
           sounding plausible. “No longer true” deliberately stores nothing — the rule is wrong,
           not in a state worth recording, so it stays at the top of the sweep until you fix or
@@ -243,7 +219,7 @@ watch(() => props.ruleId, load);
             <span v-if="rel.note" class="relation-note">{{ rel.note }}</span>
           </li>
         </ul>
-        <p class="tier-test">
+        <p class="field-note">
           Rules that <em>fail together</em> are linked, never merged — a merged rule cannot be
           cited, surfaced or suppressed a clause at a time.
         </p>
@@ -303,9 +279,16 @@ input, textarea {
 }
 fieldset { border: 1px solid var(--fs-border-color); border-radius: var(--fs-radius-md); padding: 0.75rem; margin-bottom: 1rem; }
 legend { padding: 0 0.35rem; font-size: 0.8rem; color: var(--fs-text-tertiary); }
-.tier-opt, .area-opt { display: flex; align-items: flex-start; gap: 0.5rem; margin-bottom: 0.4rem; font-size: 0.88rem; }
+.area-opt { display: flex; align-items: flex-start; gap: 0.5rem; margin-bottom: 0.4rem; font-size: 0.88rem; }
-.tier-opt input, .area-opt input { width: auto; margin-top: 0.2rem; accent-color: var(--fs-accent); }
+.area-opt input { width: auto; margin-top: 0.2rem; accent-color: var(--fs-accent); }
-.tier-test { margin: 0.5rem 0 0; font-size: 0.78rem; color: var(--fs-text-tertiary); line-height: 1.45; }
+.trigger-missing textarea { border-color: var(--fs-warning); }
+/* --fs-warning-fg, not --fs-warning: the token set draws the distinction
+   between the warning HUE and warning text, and this is text. */
+.trigger-warning {
+  margin: -0.35rem 0 0.6rem; font-size: 0.78rem; line-height: 1.45;
+  color: var(--fs-warning-fg);
+}
+.field-note { margin: 0.5rem 0 0; font-size: 0.78rem; color: var(--fs-text-tertiary); line-height: 1.45; }
 
 .relations h3 { margin: 0 0 0.5rem; font-size: 0.85rem; color: var(--fs-text-secondary); }
 .relations ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.35rem; }

frontend/src/components/rules/RuleHistoryPanel.vue

@@ -40,14 +40,13 @@ const loadingDetail = ref(false);
 // Labels rather than column names: a reader is deciding whether to open a
 // row, and "How to apply" reads where "how_to_apply" has to be decoded.
 type TextField =
-  | "title" | "statement" | "when_to_apply" | "tier"
+  | "title" | "statement" | "when_to_apply"
   | "why" | "how_to_apply" | "verify_with" | "expires_when";
 
 const FIELDS: Array<[TextField, string]> = [
   ["title", "Title"],
   ["statement", "Statement"],
   ["when_to_apply", "When to apply"],
-  ["tier", "Tier"],
   ["why", "Why"],
   ["how_to_apply", "How to apply"],
   ["verify_with", "Check"],

frontend/src/components/rules/RuleListPane.vue

@@ -26,9 +26,14 @@ const emit = defineEmits<{
       <li v-for="r in rules" :key="r.id" @click="emit('open-rule', r.id)">
         <div class="title">
           {{ r.title }}
-          <!-- Only conditional is marked: always-on is the default and
+          <!-- Marked only when something is WRONG: every rule arrives by
-               badging every row would say nothing. -->
+               retrieval now, so "conditional" stopped distinguishing anything.
-          <span v-if="r.tier === 'conditional'" class="rule-chip" title="Arrives when its trigger fires, rather than in every session">conditional</span>
+               A missing trigger does — it means nothing can retrieve this. -->
+          <span
+            v-if="!r.when_to_apply"
+            class="rule-chip rule-chip-inert"
+            title="No trigger, so nothing can retrieve it — this rule will never reach a session"
+          >never surfaces</span>
           <!-- Present only on a rule carrying a check, so the chip's very
                presence says "this one asserts a fact that can go false". -->
           <span

frontend/src/components/rules/RuleSweepPane.vue

@@ -10,19 +10,16 @@
  */
 import { onMounted, ref } from "vue";
 import { useRulebooksStore } from "@/stores/rulebooks";
-import type { RuleTier } from "@/api/rulebooks";
 
 const emit = defineEmits<{ "open-rule": [id: number] }>();
 
 const store = useRulebooksStore();
 const neverOnly = ref(false);
-const tier = ref<RuleTier | "">("");
 const busyId = ref<number | null>(null);
 
 function reload() {
   return store.fetchRulesDue({
     neverOnly: neverOnly.value || undefined,
-    tier: tier.value || undefined,
   });
 }
 
@@ -53,14 +50,6 @@ onMounted(reload);
         <input v-model="neverOnly" type="checkbox" @change="reload" />
         <span>Never checked only</span>
       </label>
-      <label class="filter">
-        <span>Tier</span>
-        <select v-model="tier" @change="reload">
-          <option value="">any</option>
-          <option value="always_on">always on</option>
-          <option value="conditional">conditional</option>
-        </select>
-      </label>
     </div>
 
     <p v-if="store.loading" class="state">Loading…</p>
@@ -68,14 +57,18 @@ onMounted(reload);
     <!-- An empty sweep is GOOD NEWS, and must not read like a broken page. -->
     <p v-else-if="!store.rulesDue.length" class="state empty">
       Nothing to check.
-      {{ neverOnly || tier ? "No rule matches these filters." : "No rule carries a check yet — add one to a rule that asserts a fact." }}
+      {{ neverOnly ? "No rule matches these filters." : "No rule carries a check yet — add one to a rule that asserts a fact." }}
     </p>
 
     <ol v-else class="rows">
       <li v-for="r in store.rulesDue" :key="r.id" class="row">
         <div class="row-head">
           <button class="row-title" @click="emit('open-rule', r.id)">{{ r.title }}</button>
-          <span v-if="r.tier === 'always_on'" class="rule-chip" title="Loaded into every session — a wrong one is wrong everywhere at once">always on</span>
+          <span
+            v-if="!r.when_to_apply"
+            class="rule-chip rule-chip-inert"
+            title="No trigger, so nothing can retrieve it — this rule will never reach a session"
+          >never surfaces</span>
           <span class="age" :class="{ unchecked: r.days_since_verified === null }">
             {{ r.days_since_verified === null
               ? "never checked"

frontend/src/components/rules/RulebookDetailPane.vue

@@ -74,14 +74,6 @@ watch(() => props.rulebookId, () => {/* re-render of isSubscribed from existing
   <section class="pane">
     <header>
       <h2>Topics</h2>
-      <label v-if="currentRulebook" class="always-on-toggle" title="When on, rules from this rulebook load at session start regardless of project context">
-        <input
-          type="checkbox"
-          :checked="currentRulebook.always_on"
-          @change="store.toggleAlwaysOn(currentRulebook.id)"
-        />
-        <span>Always on</span>
-      </label>
     </header>
     <ul>
       <li
@@ -124,12 +116,6 @@ watch(() => props.rulebookId, () => {/* re-render of isSubscribed from existing
 <style src="@/assets/rules-shared.css" />
 <style scoped>
 header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
-.always-on-toggle {
-  display: flex; align-items: center; gap: 0.4rem;
-  font-size: 0.85rem; opacity: 0.85; cursor: pointer;
-  user-select: none;
-}
-.always-on-toggle input { cursor: pointer; }
 ul { list-style: none; padding: 0; margin: 1rem 0; }
 li { padding: 0.5rem; cursor: pointer; border-radius: 6px; }
 li.active { background: var(--fs-accent-soft); }

frontend/src/components/rules/RulebookListPane.vue

@@ -31,7 +31,6 @@ async function submitNew() {
         @click="emit('select', rb.id)"
       >
         <span class="title">{{ rb.title }}</span>
-        <span v-if="rb.always_on" class="always-on-badge" title="Loaded at session start">always on</span>
       </li>
     </ul>
     <!-- Not a rulebook, and deliberately below them: a cross-cutting view over
@@ -65,16 +64,6 @@ ul { list-style: none; padding: 0; margin: 1rem 0; }
 li { padding: 0.5rem; cursor: pointer; border-radius: 6px; display: flex; align-items: center; gap: 0.5rem; }
 li.active { background: var(--fs-accent-soft); }
 li:hover { background: var(--fs-surface-hover); }
-.always-on-badge {
-  font-size: 0.7rem;
-  text-transform: uppercase;
-  letter-spacing: 0.05em;
-  padding: 0.1rem 0.4rem;
-  border-radius: 3px;
-  background: var(--fs-accent);
-  color: var(--fs-text-on-action);
-  margin-left: auto;
-}
 .sweep-entry {
   display: block; width: 100%; text-align: left;
   margin-top: var(--fs-space-3);

frontend/src/stores/rulebooks.ts

@@ -13,7 +13,7 @@ export const useRulebooksStore = defineStore("rulebooks", () => {
   // Kept so a verify re-reads the sweep with the SAME filters the operator is
   // looking at — re-fetching unfiltered would silently widen the list under
   // them at the moment they acted on it.
-  const lastSweepOpts = ref<{ olderThanDays?: number; tier?: api.RuleTier; neverOnly?: boolean }>({});
+  const lastSweepOpts = ref<{ olderThanDays?: number; neverOnly?: boolean }>({});
   const loading = ref(false);
 
   async function fetchRulebooks() {
@@ -57,19 +57,13 @@ export const useRulebooksStore = defineStore("rulebooks", () => {
     return rb;
   }
 
-  async function updateRulebook(id: number, data: Partial<Pick<Rulebook, "title" | "description" | "always_on">>) {
+  async function updateRulebook(id: number, data: Partial<Pick<Rulebook, "title" | "description">>) {
     const rb = await api.updateRulebook(id, data);
     const idx = rulebooks.value.findIndex((r) => r.id === id);
     if (idx >= 0) rulebooks.value[idx] = rb;
     return rb;
   }
 
-  async function toggleAlwaysOn(id: number) {
-    const current = rulebooks.value.find((r) => r.id === id);
-    if (!current) return;
-    return updateRulebook(id, { always_on: !current.always_on });
-  }
-
   async function deleteRulebook(id: number) {
     await api.deleteRulebook(id);
     rulebooks.value = rulebooks.value.filter((r) => r.id !== id);
@@ -112,7 +106,6 @@ export const useRulebooksStore = defineStore("rulebooks", () => {
       title: rule.title,
       statement: rule.statement,
       topic_id: rule.topic_id,
-      tier: rule.tier,
       updated_at: rule.updated_at,
       when_to_apply: rule.when_to_apply || undefined,
       arose_from_id: rule.arose_from_id ?? undefined,
@@ -162,7 +155,7 @@ export const useRulebooksStore = defineStore("rulebooks", () => {
 
   /** The staleness sweep: rules asserting a fact, oldest verification first. */
   async function fetchRulesDue(opts: {
-    olderThanDays?: number; tier?: api.RuleTier; neverOnly?: boolean;
+    olderThanDays?: number; neverOnly?: boolean;
   } = {}) {
     loading.value = true;
     lastSweepOpts.value = opts;
@@ -206,7 +199,7 @@ export const useRulebooksStore = defineStore("rulebooks", () => {
   return {
     rulebooks, topicsByRulebook, rulesByTopic, currentRule, rulesDue, lastSweepOpts, loading,
     fetchRulebooks, fetchTopics, fetchRules, fetchRule,
-    createRulebook, updateRulebook, toggleAlwaysOn, deleteRulebook,
+    createRulebook, updateRulebook, deleteRulebook,
     createTopic, updateTopic, deleteTopic,
     createRule, updateRule, deleteRule, relateRules, unrelateRules,
     fetchRulesDue, verifyRule,

frontend/src/views/ProjectView.vue

@@ -716,9 +716,6 @@ async function confirmDelete() {
       />
       <p v-else-if="project.inception" class="inception-line">
         Inheritance decided {{ fmtDate(project.inception.decided_at) }} via {{ project.inception.via }}
-        <template v-if="project.inception.choices.exclude_always_on_rulebooks.length">
-          · excludes {{ project.inception.choices.exclude_always_on_rulebooks.length }} always-on rulebook(s)
-        </template>
         <template v-if="project.inception.choices.subscribe_rulebooks.length">
           · subscribes {{ project.inception.choices.subscribe_rulebooks.length }}
         </template>

plugin/hooks/scribe_session_context.sh

@@ -156,28 +156,10 @@ if [ -n "$url" ] && [ -n "$token" ] && command -v curl >/dev/null 2>&1; then
     -H "Authorization: Bearer ${token}" \
     "${url%/}/api/plugin/context${q}" 2>/dev/null) || body=""
   [ -n "$body" ] && dyn=$(printf '%s' "$body" | jq -r '.context // empty' 2>/dev/null)
-  # Stash the rules marker for the write-path hook (milestone 323). THIS is
+  # The rules marker is gone with the resident set it described
-  # where it has to be captured: the model receives one from
+  # (milestone 394). Nothing is preloaded, so there is no set whose
-  # an MCP tool too, but a hook cannot see a tool's result. Stored
+  # drift a later write could be told about — a rule is retrieved at
-  # under the same state dir the prior-art hook already uses, keyed by session,
+  # the moment it applies, which cannot be stale.
-  # so "changed since" means since THIS session loaded its rules.
-  #
-  # Written on `compact` as well as `startup`, and that is correct rather than
-  # convenient: a compact tells the session to re-pull its rules, so the marker
-  # should describe the set it is about to hold. It is also why this cannot
-  # cover the compaction case — see the table in services/plugin_context.py.
-  if [ -n "$body" ]; then
-    etag=$(printf '%s' "$body" | jq -r '.rules_etag // empty' 2>/dev/null) || etag=""
-    if [ -n "$etag" ]; then
-      sid=$(printf '%s' "$event" | jq -r '.session_id // empty' 2>/dev/null) || sid=""
-      safe_sid=$(printf '%s' "${sid:-nosession}" | tr -c 'A-Za-z0-9._-' '_')
-      etag_dir="${TMPDIR:-/tmp}/scribe-priorart"
-      # Best-effort throughout: a marker that cannot be stored costs a hint,
-      # never the session.
-      mkdir -p "$etag_dir" 2>/dev/null \
-        && printf '%s' "$etag" > "$etag_dir/${safe_sid}.rules_etag" 2>/dev/null || true
-    fi
-  fi
   [ -z "$dyn" ] && status="> ⚠️ Scribe: live project context could not be loaded this session (instance unreachable or request failed). The standing guidance above still applies — ask for rules with \`search(content_type=\"rule\")\` and project context with \`enter_project()\` as needed."
 elif [ -n "$url" ] && [ -z "$token" ]; then
   status="> ⚠️ Scribe: live context disabled this session — the API key is not configured (Scribe base URL is). Set it with \`/plugin\` → Scribe → configure, or export SCRIBE_TOKEN. Tools still work; ask for rules with \`search(content_type=\"rule\")\` and project context with \`enter_project()\`."

src/scribe/models/rulebook.py

@@ -256,18 +256,11 @@ project_rule_suppressions = Table(
     Column("created_at", DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)),
 )
 
-# A project's opt-out of a whole ALWAYS-ON rulebook (milestone 297): the
+# `project_rulebook_exclusions` lived here until milestone 394. It recorded a
-# sibling of the two suppression tables below, one level up. Always-on
+# project's opt-out of a whole always-on rulebook — which only made sense
-# rulebooks bind every project implicitly; an inception decision can exclude
+# while a rulebook could bind a project WITHOUT being asked. Subscription is
-# specific ones for this project, and get_applicable_rules /
+# now the only reach a rulebook has, so declining one is expressed by not
-# get_applicable_rules(project_id) skips them. FKs CASCADE like the others.
+# subscribing, and there is nothing left to opt out of.
-project_rulebook_exclusions = Table(
-    "project_rulebook_exclusions",
-    Base.metadata,
-    Column("project_id", BigInteger, ForeignKey("projects.id", ondelete="CASCADE"), primary_key=True),
-    Column("rulebook_id", BigInteger, ForeignKey("rulebooks.id", ondelete="CASCADE"), primary_key=True),
-    Column("created_at", DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)),
-)
 
 project_topic_suppressions = Table(
     "project_topic_suppressions",

src/scribe/services/backup.py

@@ -23,7 +23,6 @@ from scribe.models.rulebook import (
     Rulebook,
     RulebookTopic,
     project_rule_suppressions,
-    project_rulebook_exclusions,
     project_rulebook_subscriptions,
     project_topic_suppressions,
 )
@@ -82,7 +81,7 @@ _BACKED_UP = [
     "users", "projects", "milestones", "notes", "task_logs", "note_drafts",
     "note_versions", "settings", "rulebooks", "rulebook_topics", "rules",
     "project_rulebook_subscriptions", "project_rule_suppressions",
-    "project_topic_suppressions", "project_rulebook_exclusions",
+    "project_topic_suppressions",
     # v5 (2026-08): the five-year gap this list was written to stop.
     "systems", "record_systems", "design_systems", "design_tokens",
     "note_usage_events", "repo_bindings", "note_supersessions",
@@ -247,8 +246,6 @@ def _topic_suppression_rows(rows) -> list[dict]:
     return [{"project_id": r.project_id, "topic_id": r.topic_id} for r in rows]
 
 
-def _rulebook_exclusion_rows(rows) -> list[dict]:
-    return [{"project_id": r.project_id, "rulebook_id": r.rulebook_id} for r in rows]
 
 
 # The v5 sections. Pure row-builders like the join-table helpers above, for the
@@ -652,9 +649,6 @@ async def export_full_backup() -> dict:
         topic_suppressions = (await session.execute(
             select(project_topic_suppressions)
         )).all()
-        rulebook_exclusions = (await session.execute(
-            select(project_rulebook_exclusions)
-        )).all()
 
     return {
         "version": BACKUP_VERSION,
@@ -680,7 +674,6 @@ async def export_full_backup() -> dict:
         "rulebook_subscriptions": _subscription_rows(subscriptions),
         "rule_suppressions": _rule_suppression_rows(rule_suppressions),
         "topic_suppressions": _topic_suppression_rows(topic_suppressions),
-        "rulebook_exclusions": _rulebook_exclusion_rows(rulebook_exclusions),
         "canonical_systems": _canonical_system_rows(canonical_systems),
         "rule_systems": _rule_system_rows(rule_system_rows),
         "rule_relations": _rule_relation_rows(rule_relations),
@@ -848,13 +841,8 @@ async def export_user_backup(user_id: int) -> dict:
                     project_topic_suppressions.c.project_id.in_(project_ids)
                 )
             )).all()
-            rulebook_exclusions = (await session.execute(
-                select(project_rulebook_exclusions).where(
-                    project_rulebook_exclusions.c.project_id.in_(project_ids)
-                )
-            )).all()
         else:
-            subscriptions = rule_suppressions = topic_suppressions = rulebook_exclusions = []
+            subscriptions = rule_suppressions = topic_suppressions = []
 
     return {
         "version": BACKUP_VERSION,
@@ -882,7 +870,6 @@ async def export_user_backup(user_id: int) -> dict:
         "rulebook_subscriptions": _subscription_rows(subscriptions),
         "rule_suppressions": _rule_suppression_rows(rule_suppressions),
         "topic_suppressions": _topic_suppression_rows(topic_suppressions),
-        "rulebook_exclusions": _rulebook_exclusion_rows(rulebook_exclusions),
         "canonical_systems": _canonical_system_rows(canonical_systems),
         "rule_systems": _rule_system_rows(rule_system_rows),
         "rule_relations": _rule_relation_rows(rule_relations),
@@ -1028,7 +1015,7 @@ async def _restore_v2(data: dict) -> dict:
         "task_logs": 0, "note_drafts": 0, "note_versions": 0,
         "settings": 0, "rulebooks": 0, "rulebook_topics": 0, "rules": 0,
         "rulebook_subscriptions": 0, "rule_suppressions": 0,
-        "topic_suppressions": 0, "rulebook_exclusions": 0,
+        "topic_suppressions": 0,
         "systems": 0, "record_systems": 0, "design_systems": 0,
         "design_tokens": 0, "note_usage_events": 0, "rule_usage_events": 0,
         "repo_bindings": 0,
@@ -1347,15 +1334,11 @@ async def _restore_v2(data: dict) -> dict:
             stats["topic_suppressions"] += 1
 
         # 14b. Always-on rulebook exclusions (v10, milestone 297)
-        for exc in data.get("rulebook_exclusions", []):
+        # `rulebook_exclusions` was a v10 section and is READ BY NOBODY since
-            mapped_pid = project_id_map.get(exc.get("project_id", 0))
+        # milestone 394 removed the table. An archive carrying it still
-            mapped_rbid = rulebook_id_map.get(exc.get("rulebook_id", 0))
+        # imports — the key is simply not looked at — because refusing a
-            if mapped_pid is None or mapped_rbid is None:
+        # backup for remembering something we deleted would make every v10-v13
-                continue
+        # archive unrestorable.
-            await session.execute(project_rulebook_exclusions.insert().values(
-                project_id=mapped_pid, rulebook_id=mapped_rbid,
-            ))
-            stats["rulebook_exclusions"] += 1
 
         # --- v5 sections. Every one is data.get()-guarded, so a v2/v3/v4
         # payload restores without them rather than failing on an absent key.
@@ -1680,10 +1663,12 @@ async def _restore_v2(data: dict) -> dict:
             inception = p_data.get("inception")
             if isinstance(inception, dict):
                 choices = dict(inception.get("choices") or {})
-                choices["exclude_always_on_rulebooks"] = [
+                # DROPPED, not remapped (milestone 394). A pre-394 archive
-                    rulebook_id_map[i] for i in choices.get("exclude_always_on_rulebooks") or []
+                # carries the retired exclusion choice; restoring it would put
-                    if i in rulebook_id_map
+                # a key back that `validate_inception` now rejects as unknown,
-                ]
+                # so the next edit to that project would fail on data this
+                # importer wrote.
+                choices.pop("exclude_always_on_rulebooks", None)
                 choices["subscribe_rulebooks"] = [
                     rulebook_id_map[i] for i in choices.get("subscribe_rulebooks") or []
                     if i in rulebook_id_map

src/scribe/services/plugin_context.py

@@ -2142,18 +2142,6 @@ def _stamp_line(path: str, stamped: list[dict]) -> str:
     )
 
 
-async def _topic_titles(topic_ids: set[int]) -> dict[int, str]:
-    """Map topic_id -> title for the given ids (live topics only)."""
-    if not topic_ids:
-        return {}
-    async with async_session() as session:
-        rows = await session.execute(
-            select(RulebookTopic.id, RulebookTopic.title).where(
-                RulebookTopic.id.in_(topic_ids),
-                RulebookTopic.deleted_at.is_(None),
-            )
-        )
-        return {tid: title for tid, title in rows.all()}
 
 
 async def build_session_context(

tests/helpers.py

@@ -225,7 +225,7 @@ def fake_rule(**attrs) -> MagicMock:
         # Named for the note-2109 reason the whole helper exists: unnamed,
         # `when_to_apply` and `arose_from_id` would be truthy MagicMocks and
         # rule_brief would attach both keys on every stand-in.
-        "when_to_apply": None, "tier": "always_on", "arose_from_id": None,
+        "when_to_apply": None, "arose_from_id": None,
         # Named for the same reason one line up, and it bites harder here.
         # `rule_brief` and `to_dict` both emit `kind or "rule"`, and a
         # MagicMock is truthy — so an unnamed `kind` would put a MagicMock

tests/test_inception.py

@@ -32,28 +32,31 @@ def test_exclusions_table_is_the_suppressions_sibling():
 
 
 def test_validate_inception_pins_the_choice_vocabulary():
-    assert CHOICE_KEYS == ("exclude_always_on_rulebooks", "subscribe_rulebooks", "design_system_id", "seed_systems")
+    assert CHOICE_KEYS == ("subscribe_rulebooks", "design_system_id", "seed_systems")
     assert validate_inception({}) is None
-    assert validate_inception({"exclude_always_on_rulebooks": [1], "subscribe_rulebooks": [2],
+    assert validate_inception({"subscribe_rulebooks": [2],
                                "design_system_id": 3, "seed_systems": True}) is None
     assert validate_inception({"design_system_id": None}) is None
     assert "must be an object" in validate_inception([])
     assert "unknown inception choice" in validate_inception({"repo": "x"})
-    assert "list of rulebook ids" in validate_inception({"exclude_always_on_rulebooks": "1"})
+    # The retired exclusion key is now an UNKNOWN key rather than a typed one,
+    # which is the right error: a caller still passing it is asking for a
+    # choice that no longer exists, and silently ignoring it would let them
+    # believe a rulebook had been declined.
+    assert "unknown inception choice" in validate_inception(
+        {"exclude_always_on_rulebooks": [1]})
     assert "list of rulebook ids" in validate_inception({"subscribe_rulebooks": [0]})
     assert "list of rulebook ids" in validate_inception({"subscribe_rulebooks": [True]})
-    assert "both excluded and subscribed" in validate_inception(
-        {"exclude_always_on_rulebooks": [1, 2], "subscribe_rulebooks": [2]})
     assert "positive id or null" in validate_inception({"design_system_id": 0})
     assert "positive id or null" in validate_inception({"design_system_id": True})
     assert "true or false" in validate_inception({"seed_systems": "yes"})
 
 
 def test_normalize_choices_is_canonical_and_complete():
-    out = normalize_choices({"subscribe_rulebooks": [3, 1, 3], "exclude_always_on_rulebooks": [2]})
+    out = normalize_choices({"subscribe_rulebooks": [3, 1, 3]})
-    assert out == {"exclude_always_on_rulebooks": [2], "subscribe_rulebooks": [1, 3],
+    assert out == {"subscribe_rulebooks": [1, 3],
                    "design_system_id": None, "seed_systems": False}
-    assert normalize_choices(None) == {"exclude_always_on_rulebooks": [], "subscribe_rulebooks": [],
+    assert normalize_choices(None) == {"subscribe_rulebooks": [],
                                        "design_system_id": None, "seed_systems": False}
 
 

tests/test_inception_rules.py

@@ -1,69 +0,0 @@
-"""Milestone 297 step 2 — always-on exclusions reach every rule surface.
-
-The SQL is the integration lane's; here the contracts: rules_payload carries
-the seventh key, list_always_on_rules takes project_id, the session-start
-block names the excluded rulebooks, and the MCP tools mount.
-"""
-from unittest.mock import AsyncMock, patch
-
-import pytest
-
-from scribe.services.rulebooks import rules_payload
-
-
-def test_rules_payload_carries_excluded_always_on_as_the_seventh_key():
-    out = rules_payload({
-        "rules": [], "truncated": False, "subscribed_rulebooks": [],
-        "excluded_always_on": [{"id": 1, "title": "Family"}],
-    }, user_id=1, source="enter_project")
-    assert set(out) == {
-        "applicable_rules", "applicable_rules_truncated", "subscribed_rulebooks",
-        "project_rules", "suppressed_rules", "suppressed_topics", "excluded_always_on",
-    }
-    assert out["excluded_always_on"] == [{"id": 1, "title": "Family"}]
-    # An older applicable dict without the key still renders (empty list).
-    assert rules_payload(
-        {"rules": [], "truncated": False, "subscribed_rulebooks": []},
-        user_id=1, source="enter_project",
-    )["excluded_always_on"] == []
-
-
-def test_list_always_on_rules_service_and_tool_take_a_project_id():
-    import inspect
-
-    from scribe.mcp.tools import rulebooks as tools
-    from scribe.services import rulebooks as svc
-    assert "project_id" in inspect.signature(svc.list_always_on_rules).parameters
-    assert "project_id" in inspect.signature(tools.list_always_on_rules).parameters
-
-
-@pytest.mark.asyncio
-async def test_session_context_names_the_excluded_always_on_rulebooks():
-    from types import SimpleNamespace as NS
-
-    from scribe.services.plugin_context import build_session_context
-    rules = [NS(id=1, title="`dev` is home", topic_id=1, statement="x")]
-    project = NS(id=9, title="Widget", goal="", design_system_id=None)
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
-               AsyncMock(return_value=rules)) as lao, \
-         patch("scribe.services.plugin_context.rulebooks_svc.excluded_always_on_rulebooks",
-               AsyncMock(return_value=[{"id": 5, "title": "Design standards"}])), \
-         patch("scribe.services.plugin_context._topic_titles", AsyncMock(return_value={1: "git"})), \
-         patch("scribe.services.plugin_context.projects_svc.get_project", AsyncMock(return_value=project)), \
-         patch("scribe.services.plugin_context.notes_svc.list_notes", AsyncMock(return_value=([], 0))), \
-         patch("scribe.services.plugin_context.rulebooks_svc.get_applicable_rules",
-               AsyncMock(return_value={"rules": [], "truncated": False, "subscribed_rulebooks": [],
-                                       "project_rules": [], "suppressed_rules": [],
-                                       "suppressed_topics": [], "excluded_always_on": []})):
-        out = await build_session_context(user_id=7, project_id=9)
-    # The always-on set was asked FOR THIS PROJECT, and the departure is named.
-    assert lao.await_args.kwargs.get("project_id") == 9
-    assert "Excluded for this project by its inception decision" in out["context"]
-    assert "Design standards (#5)" in out["context"]
-
-
-def test_exclusion_routes_are_registered():
-    from scribe.app import create_app
-    rules = {r.rule for r in create_app().url_map.iter_rules()}
-    assert "/api/projects/<int:project_id>/exclusions/rulebooks/<int:rulebook_id>" in rules
-

tests/test_instruction_surfaces_agree.py

@@ -1,4 +1,4 @@
-"""The instruction surfaces must agree that the agent pulls the rules itself.
+"""The instruction surfaces must agree on how a rule reaches a session.
 
 WHY THIS EXISTS
 
@@ -17,16 +17,23 @@ an extended period, and nothing announced it. An agent trusting the push would
 have run with no binding rules and no signal — while those rules govern branch,
 commit, push and other hard-to-reverse actions.
 
-The asymmetry is the whole argument, and it is what these tests pin: pulling
+The asymmetry is the whole argument, and it is what these tests pin: asking
-when a push also arrived costs one redundant call; not pulling when the push
+when a rule had already arrived costs one redundant call; not asking when
-never came costs the operator's rules entirely.
+nothing arrived costs the operator's rules entirely.
+
+MILESTONE 394 SHARPENED IT RATHER THAN RETIRING IT. There is no longer a
+resident set to pull, so "no rule in front of me" went from a rare and
+suspicious state to the ordinary state of most turns. The instruction that
+used to be supplementary — go and ask — is now the only route a rule has, and
+the surfaces must additionally say what an EMPTY session means, or a session
+reads silence as permission on nearly every turn.
 
 WHAT THIS DOES NOT DO
 
 It cannot tell whether two surfaces contradict each other in prose generally —
-that needs a reader. It pins the one instruction whose absence is known to be
+that needs a reader. It pins the instructions whose absence is known to be
 load-bearing, and the specific shape the #2497 defect took: naming the push
-without also stating the pull.
+without also stating how to ask.
 """
 from __future__ import annotations
 
@@ -34,8 +41,33 @@ import pathlib
 
 ROOT = pathlib.Path(__file__).resolve().parents[1]
 
-# The pull instruction, however a surface phrases the surrounding prose.
+# THE PULL IS NOW THE ASK (milestone 394). This was `list_always_on_rules`,
-PULL = "list_always_on_rules"
+# the call that fetched the resident set. There is no resident set and no such
+# call: a rule reaches a session by retrieval, and the only thing a session can
+# DO about a rule it has not been handed is go looking for one.
+#
+# So the two halves this file used to pin separately — "pull the resident set"
+# and "and retrieve the conditional ones too" — have collapsed into one
+# instruction, and it is the load-bearing one rather than the supplementary
+# one it used to be.
+ASK = 'content_type="rule"'
+
+# A surface must also say what an EMPTY session means, which is the half that
+# is newly dangerous. Under residency, "no rule in front of me" was rare and
+# suspicious. Under retrieval it is the ordinary state of most turns, so a
+# session that reads it as "there is no rule" is wrong on nearly every turn
+# rather than occasionally — the #3720 defect at session scale.
+#
+# Claim phrases, not a single word, for the reason BINDING_CLAIMS gives below:
+# a bare "matched" or "silence" appears in prose that is not making this claim
+# at all. A surface passes by asserting the distinction however it words it.
+ABSENCE_CLAIMS = (
+    "nothing matched",
+    "is not the same as \"there is no rule",
+    "never \"there is no rule",
+    "silence is not absence",
+    "not evidence there is none",
+)
 
 # Surfaces a session loads before substantive work. Hand-written because
 # "is this a session-start surface?" is an editorial fact, not a derivable one —
@@ -67,21 +99,51 @@ def _all_surfaces() -> list[tuple[str, str]]:
     return found
 
 
-def test_every_session_start_surface_states_the_pull():
+def test_every_session_start_surface_states_the_ask():
+    """Retrieval is the only delivery, so asking is the only recourse."""
     missing = []
     for path in SESSION_START_SURFACES:
         assert path.exists(), (
             f"{path.relative_to(ROOT)} is gone — it was one of the surfaces "
-            f"carrying the load-the-rules instruction. If it moved, update "
+            f"carrying the rules instruction. If it moved, update "
             f"SESSION_START_SURFACES; if it was retired, check the instruction "
             f"still lives somewhere a fresh session reads."
         )
-        if PULL not in path.read_text():
+        if ASK not in path.read_text():
             missing.append(str(path.relative_to(ROOT)))
     assert not missing, (
-        f"these surfaces no longer tell the agent to call {PULL}(): {missing}. "
+        f"these surfaces never tell the agent how to ask for a rule "
-        f"The rules are pull-only and the push is best-effort, so a surface "
+        f"({ASK}): {missing}. Nothing is pushed and nothing is resident, so a "
-        f"that omits this leaves a session bound by nothing (#2198, #2497)."
+        f"surface that omits this leaves a session with no way to reach a rule "
+        f"it was not handed — bound by nothing (#2198, #2497, milestone 394)."
+    )
+
+
+def test_every_session_start_surface_says_an_empty_session_is_not_an_empty_rulebook():
+    """The half that got dangerous when residency went away.
+
+    Under the old model a session opened holding every applicable rule, so
+    "nothing is in front of me" was a rare state and a suspicious one. Under
+    retrieval it is the NORMAL state of most turns. A surface that describes
+    where rules come from, without also saying what their absence means, leaves
+    a session reading silence as permission — on nearly every turn rather than
+    occasionally.
+
+    That is #3720's defect ("absence reads as non-existence") moved from a
+    readout to the session itself, and this milestone is what makes every
+    session start in the absent state.
+    """
+    missing = []
+    for path in SESSION_START_SURFACES:
+        text = path.read_text().lower()
+        if not any(c.lower() in text for c in ABSENCE_CLAIMS):
+            missing.append(str(path.relative_to(ROOT)))
+    assert not missing, (
+        f"these surfaces say how a rule arrives but never what it means when "
+        f"none does: {missing}. 'No rule arrived' means 'nothing matched', "
+        f"never 'there is no rule' — and only one of those has been checked. "
+        f"Say it however you like; one of {ABSENCE_CLAIMS} is what this looks "
+        f"for."
     )
 
 
@@ -195,47 +257,7 @@ def test_displaced_topics_live_on_a_delivered_surface():
     )
 
 
-# The SECOND pull (milestone 333 step 3). `list_always_on_rules()` fetches the
+def test_no_surface_names_the_push_without_stating_the_ask():
-# resident tier; this one says that tier is not all of them, and that a
-# conditional rule has to be gone looking for. However a surface words the
-# surrounding prose, it names the call.
-RETRIEVE = 'content_type="rule"'
-
-
-def test_every_session_start_surface_states_the_conditional_retrieval():
-    """The push/pull asymmetry, one level in.
-
-    The tests above pin that a session PULLS the resident rules rather than
-    trusting the SessionStart push. This pins the same shape between the two
-    TIERS: an always-on rule is delivered, a conditional one is retrieved, and
-    a surface that states only the first leaves a session reading its loaded
-    set as the whole rulebook.
-
-    That reading is wrong in the direction that costs something. "Nothing was
-    pushed" and "no rule applies" are different claims, and only one of them
-    has been checked — the same asymmetry as #2198, now between tiers instead
-    of between channels.
-
-    It is also what made the always-on tier the only one that worked, on any
-    install rather than this one (rule 115). A rule nothing retrieves has to be
-    resident to bind at all, so every rule worth keeping becomes resident; and
-    a resident rule costs tokens in every session forever, so a rulebook that
-    only delivers cannot grow past what one session can hold. Retrieval is what
-    lifts that ceiling — and it only fires if something asks.
-    """
-    missing = []
-    for path in SESSION_START_SURFACES:
-        if RETRIEVE not in path.read_text():
-            missing.append(str(path.relative_to(ROOT)))
-    assert not missing, (
-        f"these surfaces state the always-on pull but never tell the agent to "
-        f"retrieve a conditional rule ({RETRIEVE}): {missing}. A session that "
-        f"reads its loaded set as the whole rulebook will act on \"I was not "
-        f"told\" as if it meant \"there is no rule\" (milestone 333 step 3)."
-    )
-
-
-def test_no_surface_names_the_push_without_stating_the_pull():
     """The exact shape #2497 took.
 
     Mentioning the SessionStart hook is fine and often useful. Mentioning it
@@ -244,13 +266,14 @@ def test_no_surface_names_the_push_without_stating_the_pull():
     """
     offenders = [
         label for label, text in _all_surfaces()
-        if "SessionStart" in text and PULL not in text
+        if "SessionStart" in text and ASK not in text
     ]
     assert not offenders, (
-        f"these surfaces describe the SessionStart push but never state the "
+        f"these surfaces describe the SessionStart push but never state how to "
-        f"explicit pull: {offenders}. The push is a delivery optimisation, not "
+        f"ask: {offenders}. The push is a delivery optimisation, not the "
-        f"the bridge — it can be absent without saying so. Name it if it helps, "
+        f"bridge — it can be absent without saying so, and since milestone 394 "
-        f"but say to call {PULL}() regardless."
+        f"it carries no rules at all. Name it if it helps, but say how to ask "
+        f"({ASK}) regardless."
     )
 
 

tests/test_integration_backup_rule_version_roundtrip.py

@@ -117,14 +117,12 @@ async def source():
                 statement="Use sh.",
                 why="the image ships no bash",
                 verify_with="read the workflow's shell setting",
-                tier="always_on",
             ),
             # The actor is already gone — what SET NULL leaves behind.
             RuleVersion(
                 rule_id=rule.id, user_id=None,
                 title="The runner has no bash",
                 statement="Use POSIX sh in run steps.",
-                tier="always_on",
             ),
         ])
         await s.commit()
@@ -263,4 +261,3 @@ async def test_the_text_survives(restored):
     assert by_statement["Use sh."].verify_with == (
         "read the workflow's shell setting"
     )
-    assert by_statement["Use sh."].tier == "always_on"

tests/test_integration_inception.py

@@ -10,7 +10,6 @@ import pytest_asyncio
 
 from scribe.models import async_session
 from scribe.models.project import Project
-from scribe.models.rulebook import Rulebook
 from scribe.services import inception as inception_svc
 from scribe.services import rulebooks as rulebooks_svc
 from scribe.services import canonical_systems as canonical_svc
@@ -31,12 +30,12 @@ async def seeded():
         await s.flush()
         ids = {"owner": owner.id, "pid": project.id}
         await s.commit()
+    # Two ordinary rulebooks. One was flagged always-on until milestone 394
+    # removed the tier; a rulebook now reaches a project only by subscription,
+    # so what used to be "binds automatically" and "binds if you opt in" are
+    # the same kind of thing.
     always = await rulebooks_svc.create_rulebook(ids["owner"], "Family standards")
     other = await rulebooks_svc.create_rulebook(ids["owner"], "Optional practices")
-    async with async_session() as s:
-        rb = await s.get(Rulebook, always.id)
-        rb.always_on = True
-        await s.commit()
     t1 = await rulebooks_svc.create_topic(always.id, ids["owner"], "git")
     await rulebooks_svc.create_rule(t1.id, ids["owner"], "dev is home", "Work on dev.")
     t2 = await rulebooks_svc.create_topic(other.id, ids["owner"], "docs")
@@ -48,20 +47,20 @@ async def seeded():
 @pytest.mark.integration
 async def test_decide_applies_every_effect_and_records_last(seeded):
     owner, pid = seeded["owner"], seeded["pid"]
-    # Undecided: the always-on rulebook binds, nothing subscribed, no Systems.
+    # Undecided: nothing binds, because nothing has been subscribed. Before
-    assert [r.title for r in await rulebooks_svc.list_always_on_rules(owner, project_id=pid)] == ["dev is home"]
+    # milestone 394 the always-on rulebook bound here without being asked for,
+    # and this assertion read the other way round.
     defaults = await inception_svc.current_defaults(owner, pid)
-    assert [r["id"] for r in defaults["always_on_rulebooks"]] == [seeded["always"]]
+    assert sorted(r["id"] for r in defaults["rulebooks"]) == sorted(
-    assert [r["id"] for r in defaults["other_rulebooks"]] == [seeded["other"]]
+        [seeded["always"], seeded["other"]])
     assert defaults["systems"] == 0 and defaults["design_system_id"] is None
+    assert (await rulebooks_svc.get_applicable_rules(pid, owner))["rules"] == []
 
     out = await inception_svc.decide(owner, pid, via="mcp", choices={
-        "exclude_always_on_rulebooks": [seeded["always"]],
         "subscribe_rulebooks": [seeded["other"]],
         "design_system_id": None,
         "seed_systems": True,
     })
-    assert out["effects"]["excluded"] == [seeded["always"]]
     assert out["effects"]["subscribed"] == [seeded["other"]]
     catalog = await canonical_svc.list_canonical_systems()
     assert len(out["effects"]["systems_seeded"]) == len(catalog)
@@ -69,35 +68,32 @@ async def test_decide_applies_every_effect_and_records_last(seeded):
     seeded_systems = await systems_svc.list_systems(owner, pid)
     assert all(s.canonical_id is not None for s in seeded_systems)
 
-    # The exclusion is total: the project's always-on set is empty, the
+    # The subscription is what binds, and it is the ONLY thing that does —
-    # departure is named, the subscription binds.
+    # the unsubscribed rulebook contributes nothing even though it used to
-    assert await rulebooks_svc.list_always_on_rules(owner, project_id=pid) == []
+    # bind every project by default.
-    assert len(await rulebooks_svc.list_always_on_rules(owner)) == 1   # user-wide unchanged
     applicable = await rulebooks_svc.get_applicable_rules(pid, owner)
-    assert [r["title"] for r in applicable["rules"]] == ["Write the why"]
-    assert [e["id"] for e in applicable["excluded_always_on"]] == [seeded["always"]]
     assert [s["id"] for s in applicable["subscribed_rulebooks"]] == [seeded["other"]]
+    assert "dev is home" not in [r["title"] for r in applicable["rules"]]
     # The record, written last, says why.
     async with async_session() as s:
         project = await s.get(Project, pid)
     assert inception_svc.is_decided(project)
     assert project.inception["via"] == "mcp" and project.inception["decided_by"] == owner
-    assert project.inception["choices"]["exclude_always_on_rulebooks"] == [seeded["always"]]
+    assert project.inception["choices"]["subscribe_rulebooks"] == [seeded["other"]]
-    # Re-deciding with seed again mints nothing twice; include reverses the exclusion.
+    # Re-deciding with seed again mints nothing twice.
     again = await inception_svc.decide(owner, pid, via="ui", choices={"seed_systems": True})
     assert again["effects"]["systems_seeded"] == []
     assert len(await systems_svc.list_systems(owner, pid)) == len(catalog)
-    await rulebooks_svc.include_always_on_rulebook_for_project(pid, seeded["always"], owner)
-    assert [r.title for r in await rulebooks_svc.list_always_on_rules(owner, project_id=pid)] == ["dev is home"]
 
 
 @pytest.mark.integration
 async def test_a_bad_decision_applies_nothing(seeded):
     owner, pid = seeded["owner"], seeded["pid"]
-    # Excluding a rulebook that is not always-on is refused BEFORE any effect.
+    # A subscription to a rulebook that is not yours is refused BEFORE any
-    with pytest.raises(ValueError, match="not always-on"):
+    # effect lands — the seed must not happen on a decision that fails.
+    with pytest.raises(ValueError, match="not found"):
         await inception_svc.decide(owner, pid, via="mcp", choices={
-            "exclude_always_on_rulebooks": [seeded["other"]], "seed_systems": True,
+            "subscribe_rulebooks": [999999], "seed_systems": True,
         })
     assert await systems_svc.list_systems(owner, pid) == []
     with pytest.raises(ValueError, match="not found"):

tests/test_integration_rule_surfacing.py

@@ -1,22 +1,27 @@
-"""Real-Postgres tests for WHICH rules reach a session (milestone 307 step 5).
+"""Real-Postgres tests for WHICH rules reach a session (milestone 307 step 5,
+narrowed by 394).
 
-What mocks can't prove, and what this milestone must not get wrong:
+What mocks can't prove, and what this design must not get wrong:
 
-1. **Nothing stops binding.** A rule with no tier, no areas and no edges
+1. A rule is invisible to a project that doesn't work in its area, and
-   behaves exactly as it did before tiers existed. That is the one failure this
+   arrives — binding, not suggested — to one that does. Area matching is
-   whole design must not produce, and it is asserted first.
+   DETERMINISTIC: a tag comparison, never a similarity score.
-2. A conditional rule is invisible to a project that doesn't work in its area,
+2. A `co_surfaces` partner arrives with its other half, which is the failure
-   and arrives — binding, not suggested — to one that does.
-3. A `co_surfaces` partner arrives with its other half, which is the failure
    that made merging rule 144 into rule 46 look like the only fix.
-4. An explicit suppression outranks an edge.
+3. An explicit suppression outranks an edge.
+
+TWO CLAIMS WERE DROPPED HERE BY MILESTONE 394, and it is worth saying which
+rather than leaving a shorter list. "A rule with no tier binds exactly as
+before" and "a conditional rule is reachable, not resident" were both about
+the always-on tier. There is no tier and no resident payload, so neither
+states anything that can now be true or false — they were not failing, they
+had stopped being claims.
 """
 import pytest
 import pytest_asyncio
 
 from scribe.models import async_session
 from scribe.models.project import Project
-from scribe.models.rulebook import Rulebook
 from scribe.services import canonical_systems as canonical_svc
 from scribe.services import rulebooks as rulebooks_svc
 from scribe.services import systems as systems_svc
@@ -27,12 +32,13 @@ pytestmark = [pytest.mark.integration, pytest.mark.usefixtures("_dispose_engine"
 
 @pytest_asyncio.fixture
 async def world():
-    """A project with TWO rulebooks, because the two payloads are different sets.
+    """A project with two rulebooks — one subscribed, one not.
 
-    `list_always_on_rules` covers always-on rulebooks; `get_applicable_rules`
+    Both are ordinary rulebooks since milestone 394; the fixture used to flag
-    covers SUBSCRIBED ones. Conflating them is easy and would make these tests
+    one always-on because that was a second, separate way to reach a project.
-    assert nothing, so the fixture carries one of each and every test says
+    Keeping two is still worth it: a rulebook nobody subscribed to must
-    which payload it is about.
+    contribute nothing, and a fixture with only the subscribed one could not
+    tell "correctly scoped" from "returns everything".
     """
     async with async_session() as s:
         owner = await ensure_user(s, "surfacing_owner")
@@ -43,10 +49,6 @@ async def world():
         await s.commit()
 
     always = await rulebooks_svc.create_rulebook(ids["owner"], "Family standards")
-    async with async_session() as s:
-        rb = await s.get(Rulebook, always.id)
-        rb.always_on = True
-        await s.commit()
     always_topic = await rulebooks_svc.create_topic(always.id, ids["owner"], "git")
     await rulebooks_svc.create_rule(
         always_topic.id, ids["owner"], "dev is home", "Work on dev.",
@@ -72,39 +74,8 @@ async def _titles(ids) -> set[str]:
     return {r["title"] for r in applicable["rules"]}
 
 
-@pytest.mark.integration
-async def test_a_rule_with_no_tier_no_areas_and_no_edges_binds_exactly_as_before(world):
-    """THE compatibility guarantee. An install upgrades and every rule it
-    already had keeps arriving — no tier set, no areas, no edges, still bound.
-    Getting this wrong would silently stop enforcing rules people rely on,
-    which is worse than any amount of payload bloat."""
-    always_on = await rulebooks_svc.list_always_on_rules(world["owner"])
-    assert "dev is home" in {r.title for r in always_on}
-    assert "Between batches, keep stacking" in await _titles(world)
 
 
-@pytest.mark.integration
-async def test_a_conditional_rule_is_reachable_not_resident(world):
-    """It leaves the session-start payload entirely — that is the point of the
-    tier — and it does NOT reach a project with no matching area."""
-    # In the ALWAYS-ON book: the tier alone keeps it out of the session-start
-    # payload, which is the whole point of the tier.
-    resident = await rulebooks_svc.create_rule(
-        world["always_topic"], world["owner"], "Release tagging", "Derive the tag.",
-        when_to_apply="when cutting a release", tier="conditional",
-    )
-    assert resident.tier == "conditional"
-    always_on = await rulebooks_svc.list_always_on_rules(world["owner"])
-    assert "Release tagging" not in {r.title for r in always_on}
-
-    # In the SUBSCRIBED book, untagged: the project has no area to reach it by,
-    # so it stays out of the project payload too. Absent for a DIFFERENT reason
-    # than above, which is why both are asserted.
-    await rulebooks_svc.create_rule(
-        world["topic"], world["owner"], "Untagged conditional", "No area yet.",
-        when_to_apply="sometime", tier="conditional",
-    )
-    assert "Untagged conditional" not in await _titles(world)
 
 
 @pytest.mark.integration
@@ -117,7 +88,7 @@ async def test_a_conditional_rule_binds_a_project_that_works_in_its_area(world):
 
     rule = await rulebooks_svc.create_rule(
         world["topic"], world["owner"], "Release tagging", "Derive the tag.",
-        when_to_apply="when cutting a release", tier="conditional",
+        when_to_apply="when cutting a release",
     )
     await rulebooks_svc.set_rule_systems(rule.id, world["owner"], [area.id])
 
@@ -145,7 +116,7 @@ async def test_co_surfaces_drags_in_the_half_that_would_have_been_missed(world):
     partner = await rulebooks_svc.create_rule(
         world["topic"], world["owner"], "Version names are labels",
         "A name decides nothing.",
-        when_to_apply="when naming a build", tier="conditional",
+        when_to_apply="when naming a build",
     )
     await rulebooks_svc.add_rule_relation(
         world["owner"], world["plain"], partner.id, "co_surfaces",
@@ -163,7 +134,6 @@ async def test_a_suppression_outranks_an_edge(world):
     does not want that one. An explicit decision beats an inferred one."""
     partner = await rulebooks_svc.create_rule(
         world["topic"], world["owner"], "Muted partner", "Should not arrive.",
-        tier="conditional",
     )
     await rulebooks_svc.add_rule_relation(
         world["owner"], world["plain"], partner.id, "co_surfaces",

tests/test_integration_rule_verification.py

@@ -99,7 +99,7 @@ async def test_rewording_the_check_drops_the_stamp(constraint):
     """A stamp certifies a check, not a rule.
 
     The safe direction, for the same reason _valid_tier falls back to
-    always_on: a rule wrongly listed as due costs one look, a rule wrongly
+    the safe direction: a rule wrongly listed as due costs one look, a rule wrongly
     vouched for costs exactly what the sweep exists to catch.
     """
     await rulebooks_svc.update_rule(
@@ -162,7 +162,6 @@ async def rulebook_of_three():
     stale = await rulebooks_svc.create_rule(
         topic.id, uid, "Bumps need a dashboard tick", "Tick it first.",
         verify_with="cat CI-runner/renovate/config.js",
-        tier="conditional",
     )
     async with async_session() as s:
         row = await s.get(Rule, stale.id)
@@ -256,12 +255,6 @@ async def test_never_only_and_the_age_filter_narrow_to_what_they_say(rulebook_of
     assert rulebook_of_three["never"] in aged
 
 
-async def test_the_tier_filter_narrows_to_one_tier(rulebook_of_three):
-    ids = [r.id for r in await rulebooks_svc.rules_due_for_verification(
-        rulebook_of_three["uid"], tier="conditional",
-    )]
-    assert rulebook_of_three["stale"] in ids
-    assert rulebook_of_three["never"] not in ids
 
 
 async def test_another_users_rules_are_not_in_your_sweep(rulebook_of_three):

tests/test_mcp_tool_projects.py

@@ -412,10 +412,10 @@ async def test_create_project_with_inception_args_decides_via_mcp():
     decided = {"inception": {"via": "mcp", "choices": {}}, "effects": {"systems_seeded": []}}
     with patch("scribe.mcp.tools.projects.projects_svc.create_project", AsyncMock(return_value=p)), \
          patch("scribe.mcp.tools.projects.inception_svc.decide", AsyncMock(return_value=decided)) as decide:
-        out = await create_project(title="P", exclude_always_on_rulebooks=[1], design_system_id=-1, seed_systems=True)
+        out = await create_project(title="P", subscribe_rulebooks=[1], design_system_id=-1, seed_systems=True)
     kw = decide.await_args.kwargs
     assert decide.await_args.args[1] == 5 and kw["via"] == "mcp"
-    assert kw["choices"] == {"exclude_always_on_rulebooks": [1], "subscribe_rulebooks": [],
+    assert kw["choices"] == {"subscribe_rulebooks": [1],
                              "design_system_id": None, "seed_systems": True}
     assert out["inception"]["via"] == "mcp" and "inception_effects" in out
 
@@ -433,7 +433,7 @@ async def test_decide_project_inception_tool_records_an_inherit_all_decision_whe
 @pytest.mark.asyncio
 async def test_enter_project_carries_the_inception_ask_only_for_an_undecided_own_project():
     applicable = {"rules": [], "project_rules": [], "truncated": False,
-                  "subscribed_rulebooks": [], "excluded_always_on": []}
+                  "subscribed_rulebooks": []}
     ask = {"defaults": {}, "ask": "decide", "call": "decide_project_inception(...)"}
 
     async def run(project):
@@ -466,6 +466,6 @@ def test_inception_routes_and_tool_are_registered():
     mcp = build_mcp_server()
     assert mcp._tool_manager.get_tool("decide_project_inception") is not None
     tool = mcp._tool_manager.get_tool("create_project")
-    for name in ("exclude_always_on_rulebooks", "subscribe_rulebooks", "design_system_id", "seed_systems"):
+    for name in ("subscribe_rulebooks", "design_system_id", "seed_systems"):
         assert name in tool.parameters.get("properties", {}), name
 

tests/test_mcp_tool_rulebooks.py

@@ -225,7 +225,9 @@ def test_register_attaches_every_tool():
     # 26 through milestone 307, +2 for the staleness sweep (milestone 312),
     # +1 for a rule's edit history (milestone 323), +2 for preferences
     # (milestone 399).
-    assert len(mcp.names) == 31
+    # 28 since milestone 394 took list_always_on_rules and the two
+    # always-on exclusion tools with the tier they served.
+    assert len(mcp.names) == 28
     # spot-check a few names
     assert "list_rulebooks" in mcp.names
     assert "create_rule" in mcp.names
@@ -236,10 +238,6 @@ def test_register_attaches_every_tool():
     assert "create_preference" in mcp.names
     assert "update_preference" in mcp.names
     assert "subscribe_project_to_rulebook" in mcp.names
-    assert "list_always_on_rules" in mcp.names
-    # milestone 297: a project's opt-out of a whole always-on rulebook
-    assert "exclude_always_on_rulebook" in mcp.names
-    assert "include_always_on_rulebook" in mcp.names
     assert "create_project_rule" in mcp.names
     assert "suppress_rule_for_project" in mcp.names
     # milestone 312: the sweep, and the stamp that answers it
@@ -252,57 +250,12 @@ def test_register_attaches_every_tool():
     assert "unsuppress_topic_for_project" in mcp.names
 
 
-@pytest.mark.asyncio
-async def test_list_always_on_rules_returns_empty_when_no_always_on_rulebooks():
-    with patch(
-        "scribe.mcp.tools.rulebooks.rulebooks_svc.list_always_on_rules",
-        AsyncMock(return_value=[]),
-    ):
-        from scribe.mcp.tools.rulebooks import list_always_on_rules
-        out = await list_always_on_rules()
-    # An install with no always-on rulebooks still gets a marker (milestone
-    # 323): "no rules" is a STATE, and a payload that omitted the key would
-    # make the write path read every session on a fresh install as a change.
-    assert out == {"rules": [], "total": 0, "rules_etag": "empty|0"}
 
 
-@pytest.mark.asyncio
-async def test_list_always_on_rules_projects_each_rule():
-    rules = [fake_rule(id=100, title="r", statement="s", topic_id=10), fake_rule(id=101, title="r", statement="s", topic_id=10)]
-    with patch(
-        "scribe.mcp.tools.rulebooks.rulebooks_svc.list_always_on_rules",
-        AsyncMock(return_value=rules),
-    ):
-        from scribe.mcp.tools.rulebooks import list_always_on_rules
-        out = await list_always_on_rules()
-    assert out["total"] == 2
-    assert {r["id"] for r in out["rules"]} == {100, 101}
-    assert all("topic_id" in r for r in out["rules"])
 
 
-@pytest.mark.asyncio
-async def test_update_rulebook_forwards_always_on_when_set():
-    rb = fake_rulebook(id=1, title="t")
-    mock = AsyncMock(return_value=rb)
-    with patch("scribe.mcp.tools.rulebooks.rulebooks_svc.update_rulebook", mock):
-        from scribe.mcp.tools.rulebooks import update_rulebook
-        await update_rulebook(rulebook_id=1, always_on=True)
-    kwargs = mock.call_args.kwargs
-    assert kwargs.get("always_on") is True
-    assert "title" not in kwargs
-    assert "description" not in kwargs
 
 
-@pytest.mark.asyncio
-async def test_update_rulebook_omits_always_on_when_none():
-    rb = fake_rulebook(id=1, title="t")
-    mock = AsyncMock(return_value=rb)
-    with patch("scribe.mcp.tools.rulebooks.rulebooks_svc.update_rulebook", mock):
-        from scribe.mcp.tools.rulebooks import update_rulebook
-        await update_rulebook(rulebook_id=1, title="new title")
-    kwargs = mock.call_args.kwargs
-    assert "always_on" not in kwargs
-    assert kwargs["title"] == "new title"
 
 
 @pytest.mark.asyncio
@@ -454,7 +407,7 @@ def _fake_version(**over):
         "id": 5, "rule_id": 100, "user_id": 1,
         "title": "The runner has no bash", "statement": "Use sh.",
         "why": "the image ships no bash", "how_to_apply": None,
-        "when_to_apply": None, "tier": "always_on",
+        "when_to_apply": None,
         "verify_with": "read the workflow's shell setting",
         "expires_when": None,
         "created_at": datetime(2026, 8, 29, tzinfo=timezone.utc),

tests/test_routes_rulebooks.py

@@ -46,7 +46,7 @@ def test_service_signatures_require_user_id():
         "create_topic", "list_topics", "get_topic", "update_topic", "delete_topic",
         "create_rule", "create_project_rule", "rule_detail",
         "set_rule_systems", "add_rule_relation", "remove_rule_relation",
-        "list_rules", "list_always_on_rules",
+        "list_rules",
         "get_rule", "update_rule", "delete_rule",
         "subscribe_project", "unsubscribe_project", "get_applicable_rules",
         "suppress_rule_for_project", "unsuppress_rule_for_project",
@@ -93,24 +93,8 @@ def test_suppression_association_tables_declared():
         assert "rule_id" in cols or "topic_id" in cols
 
 
-def test_rulebook_model_carries_always_on():
-    """Migration 0058 added rulebooks.always_on — verify the model declares it."""
-    from scribe.models.rulebook import Rulebook
-    assert "always_on" in Rulebook.__table__.columns
-    col = Rulebook.__table__.columns["always_on"]
-    assert col.nullable is False
 
 
-def test_update_rulebook_route_accepts_always_on():
-    """PATCH /api/rulebooks/<id> must pass always_on through to the service.
-
-    The handler filters body keys against a whitelist; that whitelist needs to
-    include always_on or toggling from the UI silently drops the field.
-    """
-    import inspect as _inspect
-    from scribe.routes import rulebooks as rb_routes
-    src = _inspect.getsource(rb_routes.update_rulebook)
-    assert "always_on" in src, "update_rulebook handler missing always_on in field whitelist"
 
 
 def test_rule_and_subscription_handlers_callable():

tests/test_rule_ledger_ageing.py

@@ -5,8 +5,9 @@ WHY THIS EXISTS
 #3749 clears the ledger when an EVENT destroys context — a compaction, a
 /clear. This covers the case with no event at all: a long session where a rule
 was named two hundred turns ago and has simply fallen out of attention. Same
-argument #3702 made at the tier level (present in context and salient at the
+argument #3702 made about tiers (present in context and salient at the
-moment are different properties), applied to time instead of to tier.
+moment are different properties), applied to time instead. The tier itself is
+gone since milestone 394; the distinction it taught is what survives.
 
 WHAT IS PINNED, AND WHAT DELIBERATELY IS NOT
 

tests/test_rule_usage_wiring.py

@@ -167,14 +167,21 @@ async def test_the_arm_searches_on_its_OWN_bar_not_the_code_one():
     kw = search.await_args.kwargs
     assert kw["threshold"] == 0.81, "the arm is still using the code threshold"
     assert kw["limit"] == pc.RULEHINT_LIMIT
-    # NO tier filter (#3702). The arms search every rule the caller owns,
+    # NO CATEGORY FILTER (#3702, repointed by 394). This asserted that the arm
-    # because "already in the session" is not the same as "in front of the
+    # passed no `tier`. That parameter no longer exists, so the assertion had
-    # reader at the moment it applies" — and relevance is the threshold's
+    # become one that could not fail — which rule 167 rates below having none.
-    # job, not a category's. If this assertion is failing because a tier
+    #
-    # argument came back, read the block above RULEHINT_LIMIT first: the
+    # The claim it was making is still live, on the axis that DOES still exist:
-    # filter may legitimately return, but only carrying a measured reason.
+    # the act arms narrow by nothing, so a preference reaches a write exactly
-    assert "tier" not in kw or kw["tier"] is None, (
+    # as a rule does. "Already in the session" was never the same as "in front
-        "the arm is filtering the rule corpus by tier again"
+    # of the reader at the moment it applies", and relevance is the
+    # threshold's job rather than a category's. The one place a kind filter
+    # belongs is the reserved preference slot, which asks for a kind BECAUSE
+    # it is guaranteeing that kind a place.
+    assert "kind" not in kw or kw["kind"] is None, (
+        "the act arm is narrowing the rule corpus by kind — a preference and "
+        "a rule both apply to a write, and filtering here is how one of them "
+        "silently stops arriving"
     )
 
 

tests/test_rules_etag.py

@@ -1,267 +0,0 @@
-"""The staleness marker on the rules payload (milestone 323 step 5).
-
-WHAT THE MARKER IS FOR: telling a session that the rules it is holding have
-MOVED since it loaded them. Not general staleness — the limitation is stated
-in services/rulebooks.py and in the write-path arm, and two tests here pin the
-cases that would otherwise be quietly lost.
-
-The two that matter most are both about NOT crying wolf. A marker that reports
-a change when nothing changed gets ignored within a day, and an ignored
-staleness signal is worse than none: it trains a reader to skip the line that
-will one day be true.
-"""
-from datetime import datetime, timedelta, timezone
-from types import SimpleNamespace
-from unittest.mock import AsyncMock, MagicMock, patch
-
-import pytest
-
-from scribe.services import rulebooks as svc
-
-NOW = datetime(2026, 8, 30, 12, 0, tzinfo=timezone.utc)
-LATER = NOW + timedelta(hours=1)
-
-
-def _rule(updated_at=NOW, rid=1, title="a rule"):
-    """A Rule-shaped stand-in. The marker only ever reads three attributes,
-    and a real model would need a session to build."""
-    return SimpleNamespace(id=rid, title=title, updated_at=updated_at)
-
-
-def test_the_same_set_produces_the_same_marker():
-    """The whole mechanism rests on this. If the marker moved on its own, every
-    write would report a change and the line would be noise by lunchtime."""
-    rules = [_rule(rid=1), _rule(rid=2, updated_at=LATER)]
-    assert svc.rules_etag(rules) == svc.rules_etag(list(reversed(rules))), (
-        "the marker depends on the ORDER rules come back in, so any query "
-        "whose sort changes would look like an edit"
-    )
-
-
-def test_an_edit_moves_the_marker():
-    before = svc.rules_etag([_rule(rid=1), _rule(rid=2)])
-    after = svc.rules_etag([_rule(rid=1), _rule(rid=2, updated_at=LATER)])
-    assert before != after
-
-
-def test_a_DELETED_rule_moves_the_marker():
-    """THE CASE max(updated_at) ALONE CANNOT SEE, and the reason the count is
-    in there. Deleting a rule moves no timestamp — and it is the single change
-    that takes an instruction OUT of force, which is the one a session most
-    needs to hear about."""
-    before = svc.rules_etag([_rule(rid=1), _rule(rid=2)])
-    after = svc.rules_etag([_rule(rid=1)])
-    assert before != after, (
-        "a deleted rule left the marker unchanged — the count is missing, and "
-        "the session would keep obeying an instruction that no longer exists"
-    )
-
-
-def test_no_rules_is_a_state_not_a_change():
-    """Rule 115: this has to behave on an install with no rules at all. `max()`
-    over an empty set raises; a marker that raised would take the whole write
-    path's hint down, and one that varied would tell every session on a fresh
-    install that its rules had changed."""
-    assert svc.rules_etag([]) == svc.rules_etag([])
-    assert svc.rules_etag([]) != svc.rules_etag([_rule()])
-
-
-def test_moved_since_names_only_what_actually_moved():
-    held = svc.rules_etag([_rule(rid=1), _rule(rid=2)])
-    current = [_rule(rid=1), _rule(rid=2, updated_at=LATER, title="reworded")]
-    moved = svc.rules_moved_since(current, held)
-    assert [r.id for r in moved] == [2]
-
-
-def test_a_matching_marker_names_nothing():
-    rules = [_rule(rid=1), _rule(rid=2)]
-    assert svc.rules_moved_since(rules, svc.rules_etag(rules)) == []
-
-
-def test_an_unreadable_marker_reports_no_change():
-    """A caller cannot act on "something differs but I cannot say what", and a
-    garbled marker must never be rendered as a change — that is the shape of a
-    signal that gets ignored."""
-    assert svc.rules_moved_since([_rule(updated_at=LATER)], "not-an-etag") == []
-    assert svc.rules_moved_since([_rule(updated_at=LATER)], "") == []
-    assert svc.etag_count("garbled") is None
-
-
-def test_the_empty_marker_reports_no_change():
-    """An install that had no rules and now has some: the count says so, and
-    this function has no timestamp to reason from. Silence here, not a claim."""
-    assert svc.rules_moved_since([_rule()], svc.rules_etag([])) == []
-
-
-def test_the_count_survives_the_round_trip():
-    assert svc.etag_count(svc.rules_etag([_rule(rid=1), _rule(rid=2)])) == 2
-    assert svc.etag_count(svc.rules_etag([])) == 0
-
-
-def test_the_limitation_is_stated_where_a_reader_will_be():
-    """A future reader who finds an etag will assume it covers staleness
-    generally. It does not — it is blind to compaction, which is the most
-    common case — and the SessionStart nudge is that case's only mechanism.
-
-    Pinned because the plausible mistake is retiring a nudge that works on the
-    strength of a signal that does not cover it, and the comment is the only
-    thing standing in the way.
-    """
-    import inspect
-
-    from scribe.services import plugin_context
-
-    for module in (svc, plugin_context):
-        src = inspect.getsource(module).lower()
-        assert "compaction" in src and "etag" in src, (
-            f"{module.__name__} no longer explains what the rules marker "
-            f"cannot see. Without it the next reader will treat an etag as a "
-            f"general staleness check and soften the SessionStart nudge."
-        )
-
-
-# ── The arm that delivers the message (milestone 323 step 5) ───────────
-#
-# The marker is worth nothing until a session is actually TOLD. These drive
-# the real `build_write_path_hint`, because the feature IS a line arriving in
-# a hook's output — a test of the helper alone would prove the arithmetic and
-# nothing about the delivery.
-
-
-def _quiet_write_path(pc, rules):
-    """Every other arm stubbed to silent, so the only line that can appear is
-    the one under test."""
-    return (
-        patch.object(pc, "get_writepath_config",
-                     AsyncMock(return_value={"enabled": True, "threshold": 0.6,
-                                             "top_k": 3})),
-        patch.object(pc.snippets_svc, "list_snippets",
-                     AsyncMock(return_value=([], 0))),
-        patch.object(pc, "semantic_search_notes", AsyncMock(return_value=[])),
-        patch.object(pc, "semantic_search_rules", AsyncMock(return_value=[])),
-        patch.object(pc, "record_retrieval", MagicMock()),
-        patch.object(pc, "record_surfaced", MagicMock()),
-        patch.object(pc, "owner_names_for", AsyncMock(return_value={})),
-        patch.object(pc.rulebooks_svc, "list_always_on_rules",
-                     AsyncMock(return_value=rules)),
-    )
-
-
-async def _hint(rules, held_etag):
-    from scribe.services import plugin_context as pc
-
-    patches = _quiet_write_path(pc, rules)
-    for p in patches:
-        p.start()
-    try:
-        out = await pc.build_write_path_hint(
-            1, "src/scribe/services/rulebooks.py", code="x" * 400,
-            rules_etag=held_etag,
-        )
-    finally:
-        for p in patches:
-            p.stop()
-    return out["context"]
-
-
-@pytest.mark.asyncio
-async def test_a_session_is_told_which_rule_moved():
-    """The delivery, end to end through the real hint builder. Naming the rule
-    is the point — "something changed" sends the reader to re-read everything,
-    which is the cost the marker was meant to avoid."""
-    held = svc.rules_etag([_rule(rid=1), _rule(rid=2, title="dev is home")])
-    current = [_rule(rid=1), _rule(rid=2, title="dev is home", updated_at=LATER)]
-
-    ctx = await _hint(current, held)
-    assert "changed since this session started" in ctx
-    assert "#2" in ctx and "dev is home" in ctx
-
-
-@pytest.mark.asyncio
-async def test_a_session_holding_the_current_rules_is_told_nothing():
-    """The one that keeps the signal worth reading. A line on every write is a
-    line nobody reads."""
-    rules = [_rule(rid=1), _rule(rid=2)]
-    ctx = await _hint(rules, svc.rules_etag(rules))
-    assert "changed since this session started" not in ctx
-
-
-@pytest.mark.asyncio
-async def test_a_session_that_sent_no_marker_is_told_nothing():
-    """An install whose hook never reached /api/plugin/context has nothing
-    stored. Absent must read as silence, not as a mismatch — otherwise the
-    first thing a new install hears is that its rules changed."""
-    ctx = await _hint([_rule(updated_at=LATER)], "")
-    assert "changed since this session started" not in ctx
-
-
-@pytest.mark.asyncio
-async def test_a_DELETED_rule_is_reported_even_though_it_has_no_row():
-    """The count arm. A deleted rule leaves nothing to name, and it is the
-    change that takes an instruction OUT of force — so "no longer in force"
-    has to be sayable without a row to say it about."""
-    held = svc.rules_etag([_rule(rid=1), _rule(rid=2)])
-    ctx = await _hint([_rule(rid=1)], held)
-    assert "no longer in force" in ctx
-
-
-@pytest.mark.asyncio
-async def test_the_arm_fails_open():
-    """A staleness hint must never break a write. Every other arm here fails
-    open for the same reason, and this one runs a query that can fail."""
-    from scribe.services import plugin_context as pc
-
-    patches = _quiet_write_path(pc, [])
-    for p in patches:
-        p.start()
-    try:
-        with patch.object(pc.rulebooks_svc, "list_always_on_rules",
-                          AsyncMock(side_effect=RuntimeError("database down"))):
-            out = await pc.build_write_path_hint(
-                1, "src/x.py", code="x" * 400, rules_etag="2026-01-01T00:00:00+00:00|3",
-            )
-    finally:
-        for p in patches:
-            p.stop()
-    assert "changed since this session started" not in out["context"]
-
-
-def test_the_marker_cannot_break_the_payload_it_decorates():
-    """It is computed on the SessionStart path. Raising there would cost the
-    whole context payload — every rule title, the project, the lot — to save
-    a hint, which is the wrong trade in every case.
-
-    A row with no usable timestamp is skipped; a set with none degrades to a
-    count-only marker. Count-only still catches a rule ADDED or DELETED and
-    only loses edits, which is the right way round to lose information.
-
-    Found by CI: `build_session_context` tests hand it MagicMock rules, and
-    `max()` over those raises TypeError rather than returning anything.
-    """
-    from unittest.mock import MagicMock
-
-    assert svc.rules_etag([MagicMock(), MagicMock()]) == "unknown|2"
-    assert svc.rules_etag([SimpleNamespace()]) == "unknown|1"
-    # A count-only marker still moves when the set does.
-    assert svc.rules_etag([MagicMock()]) != svc.rules_etag([MagicMock(), MagicMock()])
-    # One usable stamp is enough to keep the real thing.
-    assert svc.rules_etag([_rule(), MagicMock()]).startswith("2026-")
-
-
-@pytest.mark.asyncio
-async def test_the_signal_arrives_even_when_nothing_else_matched():
-    """THE BUG CI CAUGHT, and the one the task's acceptance criterion was
-    written to catch.
-
-    `build_write_path_hint` returns early when no prior art, stamp, divergence
-    or derive matched — which sat ABOVE this arm, so a session whose rules had
-    changed was told only if the file it happened to be editing also matched
-    something else. A staleness signal that fires on that coincidence is not a
-    staleness signal.
-    """
-    held = svc.rules_etag([_rule(rid=1), _rule(rid=2, title="dev is home")])
-    current = [_rule(rid=1), _rule(rid=2, title="dev is home", updated_at=LATER)]
-
-    # Every other arm silent — which is exactly the case that used to return "".
-    ctx = await _hint(current, held)
-    assert "changed since this session started" in ctx

tests/test_services_backup.py

@@ -382,13 +382,13 @@ def test_rule_rows_carry_the_verification_fields():
     can rot — the exact blindness the fields were added to end.
 
     Column additions do not bump BACKUP_VERSION; only new SECTIONS do. Same
-    call made for when_to_apply/tier/arose_from_id in 0088 (commit 6ddb8bf).
+    call made for when_to_apply/arose_from_id in 0088 (commit 6ddb8bf).
     """
     checked = datetime(2026, 8, 27, 12, 0, tzinfo=timezone.utc)
     row = SimpleNamespace(
         id=1, topic_id=2, project_id=None, title="t", statement="s",
         why="w", how_to_apply="h", order_index=0,
-        when_to_apply="when", tier="conditional", kind="rule",
+        when_to_apply="when", kind="rule",
         verify_with="cat some/file", expires_when="the file grows a shell",
         verified_at=checked, arose_from_id=99,
         created_at=checked, updated_at=checked,
@@ -415,7 +415,7 @@ def test_rule_rows_keep_an_unverified_rule_unverified():
     row = SimpleNamespace(
         id=1, topic_id=2, project_id=None, title="t", statement="s",
         why=None, how_to_apply=None, order_index=0,
-        when_to_apply=None, tier="always_on", kind="rule",
+        when_to_apply=None, kind="rule",
         verify_with=None, expires_when=None, verified_at=None,
         arose_from_id=None,
         created_at=datetime(2026, 8, 27, tzinfo=timezone.utc),
@@ -445,7 +445,7 @@ def test_rule_rows_carry_the_kind_so_a_preference_does_not_restore_as_a_rule():
     row = SimpleNamespace(
         id=1, topic_id=2, project_id=None, title="t", statement="s",
         why=None, how_to_apply=None, order_index=0,
-        when_to_apply="when", tier="conditional", kind="preference",
+        when_to_apply="when", kind="preference",
         verify_with=None, expires_when=None, verified_at=None,
         arose_from_id=None, created_at=stamp, updated_at=stamp,
     )

tests/test_services_plugin_context.py

@@ -4,23 +4,9 @@ import pytest
 from tests.helpers import fake_note
 
 
-@pytest.fixture(autouse=True)
-def _no_exclusions():
-    """build_session_context asks for the bound project's always-on
-    exclusions (milestone 297); these tests script the rules only."""
-    with patch("scribe.services.plugin_context.rulebooks_svc.excluded_always_on_rulebooks",
-               AsyncMock(return_value=[])):
-        yield
-
-
 pytestmark = pytest.mark.usefixtures("_no_supersession")
 
 
-def _rule(rid, title, topic_id):
-    r = MagicMock()
-    r.id, r.title, r.topic_id = rid, title, topic_id
-    r.statement = "FULL STATEMENT SHOULD NOT BE INJECTED"
-    return r
 
 
 # ─── knowledge auto-inject (Path A) ──────────────────────────────────────────
@@ -106,30 +92,6 @@ async def test_build_autoinject_hint_blank_query_returns_empty():
     search.assert_not_called()
 
 
-@pytest.mark.asyncio
-async def test_build_session_context_renders_titles_grouped_by_topic():
-    rules = [
-        _rule(1, "`dev` is home", 1),
-        _rule(2, "Release — never without explicit request", 1),
-        _rule(3, "No GitHub — Fabled-Git only", 2),
-    ]
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
-               AsyncMock(return_value=rules)), \
-         patch("scribe.services.plugin_context._topic_titles",
-               AsyncMock(return_value={1: "git-workflow", 2: "fabled-git"})):
-        from scribe.services.plugin_context import build_session_context
-        out = await build_session_context(user_id=7, project_id=0)
-
-    ctx = out["context"]
-    assert out["rule_count"] == 3
-    assert out["project"] is None
-    # Titles present, grouped under topic headings
-    assert "### git-workflow" in ctx
-    assert "### fabled-git" in ctx
-    assert "- [1] `dev` is home" in ctx
-    assert "- [3] No GitHub — Fabled-Git only" in ctx
-    # Full statements must NOT be dumped (push channel injects titles only)
-    assert "FULL STATEMENT SHOULD NOT BE INJECTED" not in ctx
 
 
 @pytest.mark.asyncio
@@ -139,11 +101,7 @@ async def test_build_session_context_includes_project_when_scoped():
     # opposite of what this test is about.
     project = MagicMock(id=2, title="FabledScribe", goal="ship it",
                         design_system_id=None)
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
+    with patch("scribe.services.plugin_context.projects_svc.get_project",
-               AsyncMock(return_value=[_rule(1, "rule", 1)])), \
-         patch("scribe.services.plugin_context._topic_titles",
-               AsyncMock(return_value={1: "git-workflow"})), \
-         patch("scribe.services.plugin_context.projects_svc.get_project",
                AsyncMock(return_value=project)), \
          patch("scribe.services.plugin_context.notes_svc.list_notes",
                AsyncMock(return_value=([], 4))):
@@ -170,11 +128,7 @@ async def test_build_session_context_pushes_the_projects_design_system():
         "guidance": [], "token_count": 95,
         "token_groups": ["accent", "surface", "type"],
     }
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
+    with patch("scribe.services.plugin_context.projects_svc.get_project",
-               AsyncMock(return_value=[_rule(1, "rule", 1)])), \
-         patch("scribe.services.plugin_context._topic_titles",
-               AsyncMock(return_value={1: "git-workflow"})), \
-         patch("scribe.services.plugin_context.projects_svc.get_project",
                AsyncMock(return_value=project)), \
          patch("scribe.services.plugin_context.notes_svc.list_notes",
                AsyncMock(return_value=([], 0))), \
@@ -200,11 +154,7 @@ async def test_build_session_context_survives_an_unreadable_design_system():
     That must degrade to "no design block", not to a crash that costs the
     session its rules too."""
     project = MagicMock(id=2, title="App", goal="", design_system_id=9)
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
+    with patch("scribe.services.plugin_context.projects_svc.get_project",
-               AsyncMock(return_value=[_rule(1, "rule", 1)])), \
-         patch("scribe.services.plugin_context._topic_titles",
-               AsyncMock(return_value={1: "git-workflow"})), \
-         patch("scribe.services.plugin_context.projects_svc.get_project",
                AsyncMock(return_value=project)), \
          patch("scribe.services.plugin_context.notes_svc.list_notes",
                AsyncMock(return_value=([], 0))), \
@@ -219,14 +169,10 @@ async def test_build_session_context_survives_an_unreadable_design_system():
 
 @pytest.mark.asyncio
 async def test_build_session_context_unbound_repo_emits_bind_hint():
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
+    from scribe.services.plugin_context import build_session_context
-               AsyncMock(return_value=[_rule(1, "rule", 1)])), \
+    out = await build_session_context(
-         patch("scribe.services.plugin_context._topic_titles",
+        user_id=7, project_id=0, unbound_repo="host/owner/repo",
-               AsyncMock(return_value={1: "git-workflow"})):
+    )
-        from scribe.services.plugin_context import build_session_context
-        out = await build_session_context(
-            user_id=7, project_id=0, unbound_repo="host/owner/repo",
-        )
 
     ctx = out["context"]
     assert out["project"] is None
@@ -289,16 +235,29 @@ async def test_build_process_manifest_truncates_long_preview():
 
 @pytest.mark.asyncio
 async def test_build_session_context_caps_length():
-    many = [_rule(i, "x" * 200, 1) for i in range(200)]
+    """The cap still binds, and now has to be provoked rather than tripped.
-    with patch("scribe.services.plugin_context.rulebooks_svc.list_always_on_rules",
-               AsyncMock(return_value=many)), \
-         patch("scribe.services.plugin_context._topic_titles",
-               AsyncMock(return_value={1: "git-workflow"})):
-        from scribe.services.plugin_context import build_session_context
-        out = await build_session_context(user_id=7)
 
-    assert len(out["context"]) <= 9000 + 60  # cap + truncation note
+    This used to hand the block 200 long rule titles, because the preload made
-    assert "truncated" in out["context"]
+    overflow the easy case. Milestone 394 removed that block, so nothing this
+    function assembles on its own is big enough any more — which is a reason
+    to drive the cap directly, not a reason to drop it. The project and design
+    blocks are still unbounded in principle, and the hook passes this text
+    through verbatim.
+
+    Patching the cap rather than manufacturing 9,000 characters keeps the test
+    about the TRUNCATION PATH — that it cuts, and that it says it cut — which
+    is the part a reader depends on.
+    """
+    from scribe.services import plugin_context as pc
+
+    with patch.object(pc, "_MAX_CHARS", 120):
+        out = await pc.build_session_context(user_id=7)
+
+    assert len(out["context"]) <= 120 + 60  # cap + truncation note
+    assert "truncated" in out["context"], (
+        "the block was cut without saying so — a reader cannot tell a "
+        "truncated context from a short one"
+    )
 
 
 # --- the reuse slot (#2246) --------------------------------------------------

tests/test_services_rulebooks.py

@@ -14,7 +14,7 @@ def _no_exclusions():
     """get_applicable_rules asks for the project's always-on exclusions
     (milestone 297) through its own session; these mocked-session tests
     script the rule queries only, so the exclusions lookup is stubbed empty."""
-    with patch("scribe.services.rulebooks.excluded_always_on_rulebooks", AsyncMock(return_value=[])):
+    if True:
         yield
 
 
@@ -345,7 +345,7 @@ async def test_get_applicable_rules_surfaces_suppressed_with_context():
     assert result["suppressed_topics"][0]["title"] == "design-system"
 
 
-# ── rule_brief + tier (milestone 307) ───────────────────────────────────
+# ── rule_brief (milestone 307) ──────────────────────────────────────────
 
 def test_rule_brief_carries_age_but_not_the_deep_fields():
     """The shape a SURFACED rule takes, and the reason it exists.
@@ -362,7 +362,6 @@ def test_rule_brief_carries_age_but_not_the_deep_fields():
         updated_at=datetime(2026, 6, 1, 14, 30, tzinfo=timezone.utc),
     ))
     assert out["when_to_apply"] == "before any git push"
-    assert out["tier"] == "always_on"
     # A DATE, not a stamp: the question is "how old is this", and a full ISO
     # string across the always-on set is ~2k characters of payload.
     assert out["updated_at"] == "2026-06-01"
@@ -381,17 +380,6 @@ def test_rule_brief_omits_keys_a_rule_has_no_value_for():
     assert "arose_from_id" not in out
 
 
-def test_an_unknown_tier_falls_back_to_binding():
-    """The asymmetry that decides the direction: a rule that preloads when it
-    needn't costs context; a rule that quietly stops preloading costs the
-    behaviour it was written for. So a typo binds."""
-    from scribe.services.rulebooks import _valid_tier
-
-    assert _valid_tier("conditional") == "conditional"
-    assert _valid_tier("always_on") == "always_on"
-    assert _valid_tier("Conditional") == "always_on"
-    assert _valid_tier("") == "always_on"
-    assert _valid_tier("occasionally") == "always_on"
 
 
 # ── verify_with / expires_when (milestone 312) ──────────────────────────
@@ -467,7 +455,6 @@ def test_a_sweep_row_carries_the_check_in_full():
     assert row["verify_with"] == "cat CI-runner/renovate/config.js"
     assert row["expires_when"] == "dependencyDashboardApproval is turned off"
     assert row["when_to_apply"] == "when a dependency bump is in play"
-    assert row["tier"] == "always_on"
 
 
 def test_never_verified_reports_no_day_count_rather_than_zero():
@@ -495,13 +482,3 @@ def test_a_verified_row_counts_the_days():
     assert row["days_since_verified"] == 74
 
 
-@pytest.mark.asyncio
-async def test_an_unrecognised_tier_filter_raises_rather_than_narrowing():
-    """_valid_tier's silent always_on fallback is right for a WRITE — a typo
-    should leave a rule binding. It is wrong for a FILTER, where the same
-    fallback would quietly answer a different question than the one asked and
-    return a short list that looks like good news."""
-    from scribe.services.rulebooks import rules_due_for_verification
-
-    with pytest.raises(ValueError, match="tier must be one of"):
-        await rules_due_for_verification(7, tier="occasionally")