docs(scribe): true up plugin + MCP docs after calendar/entity removal

Milestone #194 plugin/docs slice.

- plugin.json: "second brain" framing -> "system-of-record"; bump
  0.1.11 -> 0.1.12 (any plugin/ change must bump the manifest, issue #1040)
- plugin/README.md + using-scribe SKILL + scribe_static_context: drop
  events/typed-entities from the surface lists; "second brain" -> "system
  of record" in the SessionStart context Claude reads each session
- docs/api-keys-and-mcp.md: drop the Typed-entities + Events MCP tool rows,
  add the Systems row
- README.md: rewrite the stale front-matter (chat/RAG/calendar/weather/push
  described a pre-pivot product) to the current Claude-driven work store

Deeper pre-pivot doc-rot in docs/features.md + docs/api-reference.md
(chat/journal/weather/web-research) is tracked separately as an issue.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BPtbSzA4JLMAKgFZ8VTg7Q

plugin/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "scribe",
-  "description": "Scribe second brain for Claude Code: MCP tools over your notes/tasks/projects/rules, a session-start push channel that surfaces your always-on rules + active-project context, process-skills (writing-plans, systematic-debugging, verification, brainstorming), and your saved Scribe Processes auto-surfaced as skills (/scribe:sync). Replaces superpowers + file-memory with one app-backed plugin.",
-  "version": "0.1.11",
+  "description": "Scribe system-of-record for Claude Code: MCP tools over your notes/tasks/projects/rules, a session-start push channel that surfaces your always-on rules + active-project context, process-skills (writing-plans, systematic-debugging, verification, brainstorming), and your saved Scribe Processes auto-surfaced as skills (/scribe:sync). Replaces superpowers + file-memory with one app-backed plugin.",
+  "version": "0.1.12",
   "author": { "name": "Bryan Van Deusen" },
   "mcpServers": {
     "scribe": {

plugin/README.md

@@ -3,8 +3,8 @@
 Turns a self-hosted [Scribe](https://git.fabledsword.com/bvandeusen/FabledScribe)
 instance into a first-class Claude Code extension:
 
-- **MCP tools** over your notes, tasks, projects, milestones, events, typed
-  entities, and rulebook (the `scribe` server).
+- **MCP tools** over your notes, tasks, projects, milestones, systems, and
+  rulebook (the `scribe` server).
 - **Session-start push channel** — a `SessionStart` hook injects your always-on
   rules + active-project context so Scribe surfaces *without being asked*.
 - **Universal process-skills** — brainstorm, systematic-debugging, TDD,

plugin/hooks/scribe_static_context.md

@@ -1,7 +1,7 @@
-# Scribe — your second brain and system of record
+# Scribe — your system of record
 
-This environment has the **Scribe** plugin: the operator's self-hosted second
-brain (notes, tasks, projects, milestones, rules) reachable through the
+This environment has the **Scribe** plugin: the operator's self-hosted system
+of record (notes, tasks, projects, milestones, rules) reachable through the
 `scribe` MCP tools. Treat Scribe — **not local files** — as the source of truth
 for the operator's work, and as your own working memory across sessions.
 

plugin/skills/using-scribe/SKILL.md

@@ -5,8 +5,8 @@ description: Use at the START of every session, and before answering anything ab
 
 # Using Scribe
 
-Scribe is the operator's self-hosted second brain (notes, tasks, issues,
-projects, milestones, systems, events, typed entities) and rulebook, reachable
+Scribe is the operator's self-hosted system of record (notes, tasks, issues,
+projects, milestones, systems) and rulebook, reachable
 through the bundled `scribe` MCP server. Its value is mostly in what it
 **already holds** — so make reading it a reflex, not something you wait to be
 asked for.