Deleted CSS left its modifiers behind — restore six base rules, and check for the rest (#98)

.forgejo/workflows/ci.yml

@@ -178,6 +178,15 @@ jobs:
       - name: Design token check
         run: python3 scripts/check_design_tokens.py --report-literals
 
+      # Dangling styles: an element whose classes have only modifier rules and
+      # no base — a deleted CSS rule that left its `:hover` behind. Two shipped
+      # this way (a link rendering as raw browser blue, a flex row whose parent
+      # was gone so every child stacked). Neither is visible to vue-tsc; a dead
+      # style typechecks perfectly. Reported, not gated — a bare wrapper is
+      # legitimate, so the signal is the count growing.
+      - name: Dangling style check
+        run: python3 scripts/check_dangling_styles.py
+
   test:
     name: Python tests
     if: github.ref == 'refs/heads/dev' || github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')

frontend/src/assets/components.css

@@ -36,7 +36,8 @@
 .btn-secondary,
 .btn-ghost,
 .btn-danger,
-.btn-danger-outline {
+.btn-danger-outline,
+.btn-cta {
   padding: var(--fs-space-2) var(--fs-space-4);   /* 8px 16px */
   border: none;
   border-radius: var(--fs-radius-md);             /* 8px — the system's button radius */
@@ -46,6 +47,14 @@
   line-height: var(--fs-leading-body);
   white-space: nowrap;
   cursor: pointer;
+  /* So a button carrying an icon centres it against the label without each
+     caller re-inventing the flex row — the shape they all reached for
+     separately, and the reason icon buttons sat a pixel or two off. */
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--fs-space-2);
+  text-decoration: none;
   transition: background var(--fs-dur-fast) var(--fs-ease),
               border-color var(--fs-dur-fast) var(--fs-ease),
               color var(--fs-dur-fast) var(--fs-ease);
@@ -58,7 +67,8 @@
 .btn-secondary:disabled,
 .btn-ghost:disabled,
 .btn-danger:disabled,
-.btn-danger-outline:disabled {
+.btn-danger-outline:disabled,
+.btn-cta:disabled {
   opacity: var(--fs-disabled-opacity);
   cursor: not-allowed;
 }
@@ -67,7 +77,8 @@
 .btn-secondary:focus-visible,
 .btn-ghost:focus-visible,
 .btn-danger:focus-visible,
-.btn-danger-outline:focus-visible {
+.btn-danger-outline:focus-visible,
+.btn-cta:focus-visible {
   outline: none;
   box-shadow: var(--fs-focus-ring);
 }
@@ -150,6 +161,25 @@
   color: var(--fs-text-on-action);
 }
 
+/* The one place the accent is allowed on a button: a deliberate brand moment,
+ * never an ordinary action. The system carries `--fs-gradient-cta` and
+ * `--fs-glow-cta` for exactly this and nothing else was using them.
+ *
+ * It exists because ProjectView's Workspace link WAS this button, defined in a
+ * scoped block that the migration deleted — leaving a `:hover` rule with no
+ * base and a link that rendered as raw browser blue. A variant living in one
+ * view is a variant waiting to be deleted by someone tidying another; this is
+ * the shared home so the next sweep can't strand it. */
+.btn-cta {
+  background: var(--fs-gradient-cta);
+  color: var(--fs-text-on-action);
+  box-shadow: var(--fs-glow-cta);
+  text-decoration: none;
+}
+.btn-cta:not(:disabled):hover {
+  box-shadow: var(--fs-glow-cta-hover);
+}
+
 /* --- size modifiers ------------------------------------------------------
  *
  * THREE sizes, because the app genuinely has three. Measured across the ~100
@@ -184,7 +214,7 @@
 /* Full width, for a form's single submitting action — the auth screens. Width
  * is orthogonal to size, so it composes: `btn-primary btn-block`. */
 .btn-block {
-  display: block;
+  display: flex;   /* not `block` — the shared shape centres with flex */
   width: 100%;
   padding: var(--fs-space-3) var(--fs-space-4);   /* 12px 16px — a touch taller,
                                                      because a full-width button

frontend/src/components/AppHeader.vue

@@ -128,16 +128,31 @@ router.afterEach(() => {
   border-bottom: 1px solid color-mix(in srgb, var(--color-primary) 18%, transparent);
   position: relative;
 }
+/* Three tracks, not a flex row with an absolutely-centred overlay.
+ *
+ * The pill bar used to be `position: absolute; left: 50%`, which meant it did
+ * not participate in layout: when the header ran out of room it OVERLAPPED the
+ * brand and the utility cluster rather than pushing them, and nothing wrapped
+ * or scrolled to signal it. A sixth link reached that point at ~1270px, which
+ * is an ordinary window on any monitor.
+ *
+ * `1fr auto 1fr` fixes it structurally. A `1fr` track has an AUTO minimum, so
+ * neither side can be squeezed below its content, and the two side tracks stay
+ * equal to each other — which is what keeps the bar centred in the viewport
+ * rather than merely centred in the leftover space. Overflow becomes the
+ * header growing, not two things sharing pixels. */
 .nav {
   padding: 0.6rem 1.5rem;
-  display: flex;
+  display: grid;
+  grid-template-columns: 1fr auto 1fr;
   align-items: center;
-  justify-content: space-between;
+  gap: 0.75rem;
   position: relative;
 }
 
 /* Left — brand */
 .nav-brand {
+  justify-self: start;
   display: flex;
   align-items: center;
   gap: 0.45rem;
@@ -155,9 +170,7 @@ router.afterEach(() => {
 
 /* Center — pill bar */
 .nav-center {
-  position: absolute;
+  justify-self: center;
-  left: 50%;
-  transform: translateX(-50%);
   display: flex;
   align-items: center;
 }
@@ -172,10 +185,12 @@ router.afterEach(() => {
 
 /* Right */
 .nav-right {
+  justify-self: end;
   display: flex;
   align-items: center;
   gap: 0.25rem;
   flex-shrink: 0;
+  min-width: 0;
 }
 
 .nav-link {
@@ -268,6 +283,12 @@ router.afterEach(() => {
   font-size: 0.85rem;
   color: var(--color-text-secondary);
   font-weight: 500;
+  /* The widest thing on the right and the only one that can give: a long
+     username shouldn't be what decides where the nav bar sits. */
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 12ch;
 }
 .admin-badge {
   font-size: 0.65rem;
@@ -342,13 +363,12 @@ router.afterEach(() => {
   margin-top: 0.25rem;
 }
 
-/* The pill bar is absolutely centred, so when the header runs out of room it
+/* The grid above means running out of room can no longer cause a collision —
-   OVERLAPS the brand and the utility cluster rather than pushing them — nothing
+   but it can still make the header wider than the window, and a horizontally
-   wraps, it just collides. Six primary links reach that point sooner than five
+   scrolling header is its own defect. So shed width before that happens. The
-   did, so reclaim the width here instead of leaving one out of the bar.
+   wordmark goes first: the logo beside it says the same thing and is still the
-   The wordmark goes first: the logo beside it says the same thing and is still
+   link home. */
-   the link home. */
+@media (max-width: 1280px) {
-@media (max-width: 1150px) {
   .brand-text {
     display: none;
   }

frontend/src/components/SystemsSection.vue

@@ -387,6 +387,41 @@ async function confirmDelete() {
 .system-textarea { resize: vertical; }
 
 .system-form-actions { display: flex; gap: 0.4rem; }
+
+/* RESTORED (#2444). Both lost their base rule to a CSS sweep; only the
+   `--archived` modifier and the `:hover .system-actions` reveal survived.
+   The card WAS a flex row and every child still says so — `.system-swatch`
+   and `.system-actions` are `flex-shrink: 0`, `.system-body` is `flex: 1`,
+   and `.system-form--inline` is `flex: 1`. `align-items: flex-start` is why
+   the swatch carries `margin-top: 0.3rem`: it is nudged onto the first line
+   of text rather than centred against the whole card.
+
+   The list had no rule at all, so it rendered with browser bullets and
+   indent — invisible to the dangling-style check, which can only see a class
+   that is PARTLY styled. A class with no rules anywhere looks exactly like a
+   semantic-only hook.
+
+   Surface values match `.system-form` above, which is the same card shape in
+   this file and the reason they can be recovered rather than guessed. */
+.systems-list {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.4rem;
+}
+
+.system-card {
+  display: flex;
+  align-items: flex-start;
+  gap: 0.6rem;
+  padding: 0.6rem 0.75rem;
+  background: var(--color-bg-card);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+}
+
 .system-card--archived { opacity: 0.6; }
 
 .system-swatch {

frontend/src/components/TokenPreview.vue

@@ -133,12 +133,13 @@ function ruleWidth(value: string): string {
         <li v-for="s in specimens" :key="s.name" class="tp-item">
           <div
             class="tp-specimen"
+            :class="`is-${s.shape}`"
             :title="s.substituted ? `${s.declared} → ${s.rendered}` : s.declared"
           >
             <span
               v-if="s.shape === 'colour'"
               class="tp-swatch"
-              :style="{ background: s.rendered }"
+              :style="{ '--tp-fill': s.rendered }"
             />
             <span
               v-else-if="s.shape === 'surface'"
@@ -149,6 +150,7 @@ function ruleWidth(value: string): string {
             />
             <span v-else-if="s.shape === 'length'" class="tp-rule-wrap">
               <span class="tp-rule" :style="{ width: ruleWidth(s.rendered) }" />
+              <span class="tp-rule-label">{{ s.rendered }}</span>
             </span>
             <span
               v-else-if="s.shape === 'font'"
@@ -160,8 +162,8 @@ function ruleWidth(value: string): string {
           </div>
 
           <code class="tp-name">{{ s.name }}</code>
-          <span class="tp-value">{{ s.declared || "—" }}</span>
+          <span class="tp-value" :title="s.declared">{{ s.declared || "—" }}</span>
-          <span v-if="s.purpose" class="tp-purpose">{{ s.purpose }}</span>
+          <span v-if="s.purpose" class="tp-purpose" :title="s.purpose">{{ s.purpose }}</span>
         </li>
       </ul>
     </div>
@@ -199,13 +201,16 @@ function ruleWidth(value: string): string {
   color: var(--color-text-muted);
 }
 
-.tp-group { margin-bottom: var(--fs-space-5); }
+.tp-group { margin-bottom: var(--fs-space-6); }
 
 .tp-group-heading {
-  text-transform: capitalize;
+  text-transform: uppercase;
-  font-size: var(--fs-size-label);
+  letter-spacing: var(--fs-tracking-tiny);
-  color: var(--color-text-secondary);
+  font-size: var(--fs-size-tiny);
-  margin-bottom: var(--fs-space-2);
+  color: var(--color-text-muted);
+  margin: 0 0 var(--fs-space-3);
+  padding-bottom: var(--fs-space-2);
+  border-bottom: var(--fs-border);
 }
 
 .tp-grid {
@@ -213,8 +218,8 @@ function ruleWidth(value: string): string {
   padding: 0;
   margin: 0;
   display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
+  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
-  gap: var(--fs-space-3);
+  gap: var(--fs-space-4) var(--fs-space-3);
 }
 
 .tp-item {
@@ -224,44 +229,85 @@ function ruleWidth(value: string): string {
   gap: 0.15rem;
 }
 
-/* A fixed-height stage so a 40px rule and a 2px one still line up in a grid. */
+/* A fixed-height stage so a 40px rule and a 2px one still line up in a grid.
+ *
+ * The stage itself is plain. An earlier version put the checkerboard here, so
+ * every specimen — including opaque colours and plain text — sat inside a
+ * frame of checks, and the pattern read as the loudest thing on the page. The
+ * checks belong to the ONE case that needs them: a colour that might be
+ * translucent. */
 .tp-specimen {
-  height: 2.75rem;
+  height: 2.5rem;
   display: flex;
   align-items: center;
-  border: 1px solid var(--color-border);
   border-radius: var(--fs-radius-sm);
-  padding: 0 var(--fs-space-2);
+  padding: var(--fs-space-1);
   overflow: hidden;
-  /* Checks show through anything translucent — a 15% tint over a solid card
+  background: var(--color-bg-secondary);
-     would otherwise look opaque and read as the wrong colour. */
+}
-  background:
+
-    repeating-conic-gradient(var(--color-surface) 0% 25%, var(--color-bg) 0% 50%)
+/* Text-bearing specimens get no box at all — a border around a value is a
-    0 0 / 12px 12px;
+   frame around nothing, which is most of what made the grid feel busy. */
+.tp-specimen.is-plain,
+.tp-specimen.is-length,
+.tp-specimen.is-font {
+  background: none;
+  padding: 0 var(--fs-space-1);
+}
+
+/* Checks UNDER the colour, not around it: an opaque value hides them
+   completely, and a 15% tint shows exactly as much of them as it should.
+   Layering the fill as a gradient is what lets one element do both. */
+.tp-swatch {
+  /* Declared here, overridden inline per swatch. Two reasons it is a real
+     default rather than a formality: a token that resolves to nothing renders
+     as bare checks instead of an invalid gradient, and a custom property that
+     exists ONLY as an inline style is invisible to the CI token check — which
+     reads it as an unresolvable reference, correctly, since nothing in any
+     stylesheet declares it. */
+  --tp-fill: transparent;
+  width: 100%;
+  height: 100%;
+  border-radius: calc(var(--fs-radius-sm) - 2px);
+  background-image:
+    linear-gradient(var(--tp-fill), var(--tp-fill)),
+    repeating-conic-gradient(
+      var(--color-border) 0% 25%,
+      var(--color-bg-secondary) 0% 50%
+    );
+  background-size: auto, 10px 10px;
 }
 
-.tp-swatch,
 .tp-surface {
   width: 100%;
-  height: 1.75rem;
+  height: 100%;
-  border-radius: calc(var(--fs-radius-sm) - 1px);
+  border-radius: calc(var(--fs-radius-sm) - 2px);
+  background: var(--color-bg-card);
 }
 
-.tp-surface { background: var(--color-surface); }
-
 .tp-rule-wrap {
   width: 100%;
   display: flex;
   align-items: center;
+  gap: var(--fs-space-2);
+  min-width: 0;
 }
 
 .tp-rule {
-  height: 0.5rem;
+  height: 0.4rem;
   min-width: 1px;
+  flex: none;
   background: var(--color-primary-solid);
   border-radius: 999px;
 }
 
+.tp-rule-label {
+  font-family: var(--fs-font-mono);
+  font-size: var(--fs-size-tiny);
+  color: var(--color-text-muted);
+  white-space: nowrap;
+}
+
 .tp-font {
   font-size: 1.4rem;
   color: var(--color-text);
@@ -283,16 +329,34 @@ function ruleWidth(value: string): string {
   font-style: italic;
 }
 
+/* One line each, with the full text on hover.
+ *
+ * These wrapped freely at first, so a card was two lines tall or five depending
+ * on how long its `color-mix()` happened to be, and the grid lost any rhythm —
+ * which is most of what "messy" was. A derived value is not something anyone
+ * reads character by character in a gallery; it is something you check the
+ * shape of and open if it matters. */
+.tp-name,
+.tp-value,
+.tp-purpose {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 .tp-name {
   font-size: var(--fs-size-body-sm);
   color: var(--color-text);
-  word-break: break-all;
 }
 
-.tp-value,
+.tp-value {
+  font-family: var(--fs-font-mono);
+  font-size: var(--fs-size-tiny);
+  color: var(--color-text-secondary);
+}
+
 .tp-purpose {
   font-size: var(--fs-size-tiny);
   color: var(--color-text-muted);
-  word-break: break-word;
 }
 </style>

frontend/src/components/rules/PlanRulesPanel.vue

@@ -53,6 +53,12 @@ watch(() => props.projectId, load);
   font-size: 0.9em; opacity: 0.7;
   text-transform: uppercase; letter-spacing: 0.05em;
 }
+/* `.rb` is deliberately bare — it exists to namespace the two heading rules
+   below, and its children carry their own spacing (the h4 keeps the UA
+   margin-top that separates one rulebook group from the next). Nothing here
+   assumes a flex or grid parent, which is the tell that distinguishes this
+   from a base rule someone deleted (#2444). Stated so the next reader doesn't
+   re-open the question. */
 .rb h4 { font-family: Fraunces, serif; font-style: italic; margin-bottom: 0.25rem; }
 .rb h5 {
   font-size: 0.8em; opacity: 0.7;

frontend/src/components/rules/ProjectRulesTab.vue

@@ -349,6 +349,10 @@ select {
 .applicable { margin-top: 2rem; }
 .rb-group { margin-bottom: 1.5rem; }
 .rb-group h4 { font-family: Fraunces, serif; font-style: italic; margin-bottom: 0.5rem; }
+/* `.topic-group` is deliberately bare — a namespace for the two h5 rules (this
+   one and the flex row further down), with the h5's own margin-top doing the
+   separating. Its children assume nothing about it, which is what tells it
+   apart from a base rule someone deleted (#2444). */
 .topic-group h5 {
   font-size: 0.85em; opacity: 0.7; text-transform: uppercase; letter-spacing: 0.05em;
   margin-top: 0.75rem;

frontend/src/components/rules/RulebookDetailPane.vue

@@ -135,6 +135,11 @@ ul { list-style: none; padding: 0; margin: 1rem 0; }
 li { padding: 0.5rem; cursor: pointer; border-radius: 6px; }
 li.active { background: var(--color-primary-bg); }
 li:hover { background: var(--color-hover); }
+/* `.new-topic` and `.sub-list` are deliberately bare (#2444). The first wraps a
+   button-or-form whose children style themselves; the second is a `<ul>`, and
+   the bare `ul` rule above already gives it list-style, padding and margin —
+   a base a class-name check cannot see, since it comes from an element
+   selector. Both namespace descendant rules and assume nothing about layout. */
 .new-topic input {
   width: 100%; margin-bottom: 0.5rem;
   background: var(--color-bg); color: inherit;

frontend/src/views/DashboardView.vue

@@ -176,6 +176,9 @@ onMounted(async () => {
 
 <style scoped>
 .dash-root { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }
+/* `.dash-head` is deliberately bare: a block header whose two children carry
+   all the spacing between them (h1 zeroed, .dash-sub margined). Nothing in it
+   assumes a flex parent, which is the tell for a deleted rule (#2444). */
 .dash-head h1 { margin: 0; font-family: 'Fraunces', Georgia, serif; }
 .dash-sub { margin: 0.2rem 0 1.25rem; color: var(--color-muted); font-size: 0.9rem; }
 .dash-label { display: block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 0.6rem; }

frontend/src/views/DesignSystemsView.vue

@@ -1102,6 +1102,12 @@ function isSelfContainedColour(value: string): boolean {
   padding: 1.5rem 1rem 4rem;
 }
 
+/* Restored with the same sweep that took `.milestone-header` — only the `h1`
+   descendant rule survived, so the header had no spacing of its own. */
+.ds-header {
+  margin-bottom: 2rem;
+}
+
 .ds-header h1 {
   margin: 0 0 0.5rem;
   font-size: 1.75rem;

frontend/src/views/KnowledgeView.vue

@@ -936,6 +936,17 @@ onUnmounted(() => {
   border-bottom: 1px solid var(--color-border);
   flex-shrink: 0;
 }
+/* RESTORED (#2444). The panel is a flex COLUMN and its header is
+   `flex-shrink: 0`, so this is the item that takes the remaining height — and
+   without it the `height: 100%` below resolves against `auto` and does
+   nothing, which made the comment underneath a spec for a rule that could not
+   work. `min-height: 0` is the companion that lets a flex item shrink under
+   its content instead of overflowing the panel. */
+.graph-embed {
+  flex: 1;
+  min-height: 0;
+}
+
 /* Override GraphView's 100vh height so it fills the panel instead */
 .graph-embed :deep(.graph-page) {
   height: 100%;

frontend/src/views/LogsView.vue

@@ -454,6 +454,8 @@ function clearFilters() {
 }
 
 /* Detail row */
+/* `.detail-row` is deliberately bare: a `<tr>` has nothing to style that its
+   cells don't carry, and the row exists to scope the rule below (#2444). */
 .detail-row td {
   padding: 0 0.75rem 0.75rem;
   border-bottom: 1px solid var(--color-border);

frontend/src/views/ProjectView.vue

@@ -446,27 +446,27 @@ async function confirmDelete() {
             @keyup.enter="confirmStartPlanning"
           />
           <button
-            class="btn-workspace"
+            class="btn-primary btn-compact"
             :disabled="!planTitle.trim() || planningBusy"
             @click="confirmStartPlanning"
           >
             Create plan
           </button>
-          <button class="btn-secondary btn-compact" @click="showStartPlanning = false; planTitle = ''">Cancel</button>
+          <button class="btn-ghost btn-compact" @click="showStartPlanning = false; planTitle = ''">Cancel</button>
         </template>
         <button
           v-else-if="project"
-          class="btn-workspace"
+          class="btn-ghost btn-compact"
           @click="showStartPlanning = true"
         >
           Start planning
         </button>
-        <router-link v-if="project && !showStartPlanning" :to="`/workspace/${project.id}`" class="btn-workspace">
+        <router-link v-if="project && !showStartPlanning" :to="`/workspace/${project.id}`" class="btn-cta btn-compact">
           <LayoutGrid :size="16" />
           Workspace
         </router-link>
         <button v-if="project && !showStartPlanning" class="btn-secondary btn-compact" @click="showShare = true">Share</button>
-        <button v-if="project && !showStartPlanning" class="btn-danger-outline" @click="showDeleteConfirm = true">Delete</button>
+        <button v-if="project && !showStartPlanning" class="btn-danger-outline btn-compact" @click="showDeleteConfirm = true">Delete</button>
       </div>
     </div>
 
@@ -527,11 +527,15 @@ async function confirmDelete() {
           <h3 class="panel-heading">Details</h3>
           <div class="edit-field">
             <label class="edit-label">Goal</label>
-            <input v-model="editGoal" type="text" class="edit-input" placeholder="What are you trying to achieve?" />
+            <!-- A textarea, not a single-line input. A project goal is a
+                 paragraph in practice — this one showed as "Maintain Scribe as
+                 the reliabl" and gave no way to read the rest without arrowing
+                 through it. -->
+            <textarea v-model="editGoal" class="edit-textarea" rows="4" placeholder="What are you trying to achieve?"></textarea>
           </div>
           <div class="edit-field">
             <label class="edit-label">Description</label>
-            <textarea v-model="editDescription" class="edit-textarea" rows="4" placeholder="Optional description..."></textarea>
+            <textarea v-model="editDescription" class="edit-textarea" rows="6" placeholder="Optional description..."></textarea>
           </div>
           <div class="edit-field">
             <label class="edit-label">Status</label>
@@ -870,9 +874,6 @@ async function confirmDelete() {
   min-width: 200px;
 }
 
-.btn-workspace:hover { box-shadow: var(--glow-cta-hover); opacity: 0.95; color: var(--fs-text-on-action); }
-
-/* Share: Bronze action-secondary — alternate path */
 .project-title-input {
   flex: 1;
   font-size: 1.75rem;
@@ -1067,6 +1068,29 @@ async function confirmDelete() {
 }
 .milestone-title-input:focus { outline: none; border-color: var(--color-primary); }
 /* Milestone confirm: Moss action-primary; Cancel: Bronze action-secondary */
+/* RESTORED. Both of these lost their base rule to a CSS sweep and left only
+   modifiers behind — `.milestone-header.clickable`, `.milestone-header:hover`.
+   Every child here (`.ms-chevron`, `.ms-name { flex: 1 }`, the progress track,
+   `.ms-pct`) is written for a flex ROW, so without the parent they stacked
+   vertically and each milestone grew to five lines of mostly nothing. That is
+   the "uses space poorly" the operator saw, and it was a deletion rather than a
+   design change. A dangling `:hover` is the tell, and it is now checked for. */
+.milestone-group {
+  background: var(--color-bg-card);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-md);
+  overflow: hidden;
+  margin-bottom: 0.75rem;
+}
+
+.milestone-header {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.5rem 0.85rem;
+  background: var(--color-bg-secondary);
+}
+
 .milestone-header.clickable { cursor: pointer; }
 .milestone-header.clickable:hover { background: color-mix(in srgb, var(--color-primary) 4%, var(--color-bg-secondary)); }
 

frontend/src/views/SettingsView.vue

@@ -2937,6 +2937,8 @@ function formatUserDate(iso: string): string {
 .cell-status { font-family: monospace; font-size: 0.85rem; }
 .cell-duration { color: var(--color-text-muted); font-size: 0.8rem; white-space: nowrap; }
 .text-error { color: var(--color-danger); }
+/* Bare by design, like LogsView's twin of this: a `<tr>` has nothing to style
+   that its cells don't carry (#2444). */
 .detail-row td { padding: 0 0.75rem 0.75rem; border-bottom: 1px solid var(--color-border); }
 .detail-ip { font-family: monospace; font-size: 0.8rem; color: var(--color-text-muted); margin-bottom: 0.4rem; }
 .detail-json {

scripts/check_dangling_styles.py

@@ -0,0 +1,185 @@
+#!/usr/bin/env python3
+"""Find elements whose classes have no base rule — the dangling-selector bug.
+
+THE FAILURE THIS CATCHES
+
+Deleting a CSS rule from a scoped stylesheet is not the local edit it looks
+like. Three ways it goes wrong, all of them silent:
+
+  1. A rule is deleted and its `:hover` / modifier survives. The selector still
+     exists, so nothing reads as unused, but the element renders with no base
+     styling at all. `.btn-workspace:hover` outlived `.btn-workspace` and a
+     router-link rendered as raw browser blue for days.
+
+  2. The parent's layout rule is deleted while the children keep theirs.
+     `.milestone-header` was a flex row; its children still declare `flex: 1`
+     and `flex-shrink: 0`. Without the parent they stack vertically, and a
+     milestone that was one line becomes five. Nothing errors — the page just
+     wastes space, which reads as a design decision.
+
+  3. A rule is removed from a comma-separated group, leaving `.a,` dangling in
+     front of the next rule and swallowing it. That one at least has a
+     brace-balance tell; these two do not.
+
+None of it is visible to `vue-tsc`, which is the frontend's entire check. A
+dead style typechecks perfectly.
+
+WHAT IT REPORTS
+
+An element whose every static class is styled NOWHERE as a base rule, while at
+least one of them appears in the file's CSS. That conjunction is the signal: a
+class nobody styles is ordinary (a hook for a test, a semantic label), and a
+class with only modifier rules is a deletion that went half-way.
+
+Descendant selectors count as a base — `.panel .row {}` styles `.row` — because
+from the element's side there is no difference. Only the LAST compound of a
+selector is what it styles, and a compound's whole class SET is what it
+requires: `.pane.empty` and `td.num` are base rules for the element carrying
+those classes, not modifiers. Reading them as modifiers cost this check four
+false reports on its first run, and a check with false reports is one that gets
+skimmed.
+
+REPORT, NOT FAIL. Bare wrappers with no styling of their own are legitimate,
+so this cannot be a gate without a suppression mechanism nobody would maintain.
+A count that grows is the signal to look. Where a wrapper is bare on purpose,
+say so in a comment beside its descendant rules — the remaining reports here
+all carry one, so a new entry means something changed.
+
+KNOWN BLIND SPOT: a class with NO rule anywhere is invisible to this, because
+it cannot be told from a semantic-only hook. `.systems-list` had lost its
+entire rule and was rendering with browser bullets; it was found by reading the
+file next to a class that WAS half-styled, not by this check.
+
+INSTANCE-AGNOSTIC (rule #115). Nothing here knows a class name, a component, or
+a convention; point it at any Vue tree.
+"""
+from __future__ import annotations
+
+import argparse
+import pathlib
+import re
+import sys
+
+STYLE_BLOCK = re.compile(r"<style[^>]*>(.*?)</style>", re.S)
+CSS_COMMENT = re.compile(r"/\*.*?\*/", re.S)
+# `class="a b"` only — never `:class="[...]"`, whose value is an expression.
+# The negative lookbehind is the whole point: a bound class list mentions names
+# that a static parse would misread as the element's only classes.
+STATIC_CLASS = re.compile(r'(?<![:\w-])class="([^"{}\[\]]*)"')
+SELECTOR = re.compile(r"([^{}]+)\{")
+CLASS_TOKEN = re.compile(r"\.([A-Za-z][\w-]*)")
+
+
+def shared_classes(sheets: list[pathlib.Path]) -> set[str]:
+    """Class names any global stylesheet defines — a base rule from elsewhere."""
+    names: set[str] = set()
+    for sheet in sheets:
+        if sheet.exists():
+            names |= set(CLASS_TOKEN.findall(sheet.read_text()))
+    return names
+
+
+def base_class_sets(css: str) -> list[frozenset[str]]:
+    """Class combinations this stylesheet gives a base rule to.
+
+    The last compound of a selector is what the rule styles: in
+    `.panel .row:hover` that is `.row:hover`, a state — but in `.panel .row` it
+    is `.row`, a base.
+
+    A compound may carry more than one class, and a type selector alongside
+    them. `.pane.empty` and `td.num` are both base rules for the element that
+    matches, so each is recorded as the SET of classes it requires; an element
+    is styled when it carries all of them. Recording the classes individually
+    instead would clear `.pane` everywhere on the strength of a rule that only
+    ever applies with `.empty` — precision matters more here than reach, since
+    a missed base is a false report and a wrong one is a defect gone quiet.
+
+    A compound with no class at all (`ul`, `li`) is skipped: it styles by tag,
+    which this cannot verify without parsing the template's elements, and an
+    empty set would clear every element in the file.
+    """
+    out: list[frozenset[str]] = []
+    for selector in SELECTOR.findall(css):
+        for part in selector.split(","):
+            part = part.strip()
+            if not part or part.startswith("@"):
+                continue
+            last = re.split(r"[\s>+~]+", part)[-1]
+            # A pseudo-class, pseudo-element or attribute selector makes it a
+            # state or a variant, not the element's base appearance.
+            if ":" in last or "[" in last:
+                continue
+            names = CLASS_TOKEN.findall(last)
+            # Everything outside the class tokens must be a bare type selector.
+            if names and re.fullmatch(r"[A-Za-z][\w-]*|\*|", CLASS_TOKEN.sub("", last)):
+                out.append(frozenset(names))
+    return out
+
+
+def scan(path: pathlib.Path, shared: set[str]) -> list[tuple[str, list[str]]]:
+    source = path.read_text()
+    template = source.split("<style")[0]
+    css = "\n".join(CSS_COMMENT.sub("", block) for block in STYLE_BLOCK.findall(source))
+    if not css.strip():
+        return []
+
+    base_sets = base_class_sets(css)
+    mentioned = set(CLASS_TOKEN.findall(css))
+
+    findings: list[tuple[str, list[str]]] = []
+    for attr in sorted(set(STATIC_CLASS.findall(template))):
+        names = [n for n in attr.split() if re.fullmatch(r"[A-Za-z][\w-]*", n)]
+        if not names:
+            continue
+        carried = set(names)
+        if any(carried >= required for required in base_sets):
+            continue
+        if any(n in shared for n in names):
+            continue
+        dangling = [n for n in names if n in mentioned]
+        if dangling:
+            findings.append((attr, dangling))
+    return findings
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--root", default="frontend/src", help="tree of .vue files")
+    parser.add_argument(
+        "--shared",
+        action="append",
+        default=None,
+        help="global stylesheet whose classes count as a base rule (repeatable)",
+    )
+    args = parser.parse_args()
+
+    root = pathlib.Path(args.root)
+    if not root.exists():
+        print(f"{root}: no such directory", file=sys.stderr)
+        return 2
+
+    sheets = [pathlib.Path(s) for s in (args.shared or [])]
+    if not sheets:
+        sheets = sorted(root.glob("assets/*.css"))
+    shared = shared_classes(sheets)
+
+    total = 0
+    for path in sorted(root.rglob("*.vue")):
+        for attr, dangling in scan(path, shared):
+            total += 1
+            print(f'{path}: class="{attr}" — styled but never based: {", ".join(dangling)}')
+
+    print()
+    if total:
+        print(
+            f"REPORT: {total} element(s) whose classes carry modifier rules but no base "
+            f"rule. Each is either a deleted rule that left its :hover behind, or a "
+            f"deliberately bare wrapper."
+        )
+    else:
+        print("OK — every styled class has a base rule.")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())