feat(plugin): sharpen the recall-before-acting reflex in static context

Turn the SessionStart static guidance into a concrete recall trigger — search
Scribe before answering about the operator projects/people/places/decisions or
starting a task, and pass the active project id to scope results — instead of a
vague "search for related work". Step 4 (pull-path sharpening); the
cross-encoder rerank half is deferred until auto_inject telemetry shows
precision is the bottleneck.

Scribe: project 2, milestone 93, task 1034.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Xz4j1H7pjYSjKsEpgcNH5E

plugin/hooks/scribe_static_context.md

@@ -12,10 +12,15 @@ for the operator's work, and as your own working memory across sessions.
   recent notes in one shot.
 
 **While you work:**
-- **Recall before acting** — `search` Scribe for related prior work before
-  answering a question about the operator's work, starting a task, or
-  re-deriving a decision. Assume a related note, task, or decision already
-  exists.
+- **Recall before acting** — before you answer anything about the operator's
+  work or start a task, `search` Scribe first; assume a related note, task, or
+  decision already exists. Concretely, reach for recall whenever a request
+  touches the operator's projects, people, places, prior decisions, or existing
+  work: check for an existing task before opening a new one, and for a prior
+  note/decision before re-deriving one. When a project is in scope (you entered
+  one), pass its id to `search` so results stay scoped to it. Treating Scribe as
+  the first place you look — not just somewhere you write — is what makes it a
+  trustworthy record.
 - **Record as you go** — track work as Scribe tasks and log progress with
   `add_task_log`. Always log when you **complete a task** and when you **hit or
   discover a problem** — so changes of direction are captured, not just