chore: close governance issues 0009-0012 and remove docs/notes/.gitkeep

Add missing H1 titles and ✅ markers to issues 0009–0012 (implementation
complete; manual verification pending and tracked in ROADMAP.md housekeeping).
Remove .gitkeep from docs/notes/ now that the directory has real content.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/issues/0009-governance-md-and-import-wiring.md

@@ -1,3 +1,5 @@
+# 0009 — governance.md and @import wiring ✅
+
 ## What to build
 
 Create `core/instructions/governance.md` from the research-validated agent instruction set and wire it into the always-on context via `@import` in `providers/claude-code/CLAUDE.md`.

docs/issues/0010-governance-supporting-docs.md

@@ -1,3 +1,5 @@
+# 0010 — Governance supporting docs ✅
+
 ## What to build
 
 Two supporting documentation tasks that can run in parallel with issue 0009:

docs/issues/0011-governance-reference-doc-updates.md

@@ -1,3 +1,5 @@
+# 0011 — Governance reference doc updates ✅
+
 ## What to build
 
 Four targeted updates to existing reference documents to reflect the governance layer's existence. All four are small edits; they are bundled because they share the same dependency (governance.md must exist first) and the same purpose (keeping reference documents accurate).

docs/issues/0012-governance-manual-test-plan.md

@@ -1,3 +1,5 @@
+# 0012 — Governance manual test plan ✅
+
 ## What to build
 
 Write `tests/test-governance-layer.sh` containing 5 manual test scenarios that verify the governance rules take effect in a fresh Claude session. Follow the structure of `tests/test-instructions-and-docs.sh`.

docs/notes/.gitkeep

@@ -1 +0,0 @@
-# Remove this file when the first Exploration Note is added.