Claudinite growth: conversation extract (#784)

One keeper from the four queued conversation logs: cap and qualify GitHub
MCP list/search calls. Three tracker-issue lookups via `search_issues` with
a bare title string returned 185-211 KB and hard-failed the tool-result cap
(logs for #734 twice, #753), as did an unpaged `actions_list` at 155 KB
(#760) - each forcing a 2-3 call grep/sed dig through the saved result file.
Landed as prose in the gcec pack (not mechanically checkable: it is runtime
tool usage, not repo content), plus its row in the pack README's rules table.

The other friction in the batch was already covered or out of policy: the
`git checkout <branch> -- <paths>` footgun is already RULES.md's first
working rule (captured from that same #734 session); the unmounted
`merge-to-main` skill and the missed SessionStart preference injection are
Claudinite loading mechanics, which the pack's capture policy keeps out.

Refs #783

Co-authored-by: Claude <noreply@anthropic.com>

Author: missingbulb

.claudinite/local/packs/gcec/README.md

@@ -24,6 +24,7 @@ fingerprinted or seeded.
 | Rule (≤5 words) | How enforced |
 |---|---|
 | test:offline list matches tree | **hardcoded** (`test-offline-list-sync`) |
+| Cap/qualify GitHub MCP queries | prose |
 | CI green before merge (2× heavy) | prose (canon owns method/title) |
 | Generated files: regen, never hand-merge | prose (+ each artifact's own gate) |
 | Branch sync: rebase main + regen | prose |

.claudinite/local/packs/gcec/RULES.md

@@ -16,6 +16,15 @@ pipeline" section below, and its scheduled tasks live under `tasks/`.
   that moves the branch. In #734 the combined one-liner wiped three finished
   edits **and** invalidated the `check_the_world.mjs` + `npm run test:offline`
   pass that had just gone green, forcing a full re-verification.
+- **Cap and qualify every GitHub MCP list/search call** — an unbounded one
+  hard-fails the tool-result cap and costs a 2–3-call dig through the saved
+  result file. `search_issues` handed a bare title string full-text-searches the
+  whole repo and returns every match with its full body: the standing
+  `Claudinite tracker: <Task>` lookup that opens every scheduled task blew up at
+  185–211 KB three times (#734 twice, #753), and `actions_list` without a page
+  cap at 155 KB (#760). Qualify the query (`in:title "Claudinite tracker:
+  <Task>"`, or `list_issues` + `labels`) **and** pass a small `perPage` (5–10) —
+  the answer wanted is one issue or one run, never a page of them.
 - **This repo's one divergence from the canon merge recipe: CI must be green
   first** — twice for e2e/heavy-browser changes. (Merge method and title are the
   canon default, `squash` with `(#N)`, enforced by the `squash-merge-history`