chore(arch): architecture audit 2026-06-28 — clean pass

Advance audit-from to 82583fc (range 0ededb3..82583fc).
Adds clean audit entry covering Plan 219 (Session routing),
Plan 217 (Obsidian WASM plugin), Plan 233 (include directive),
and five perf commits. No blockers, DIP violations, SRP
breaches, or line-count crossings found.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P4BB2koJ1ppbKhDs5b4UkC

Author: claude

docs/development/architecture-audit.md

@@ -6,7 +6,7 @@ summary: >-
   solid-architecture skill (audit mode)
   appends here; blockers are also filed as
   plans.
-audit-from: 0ededb39c2adb946a11814540c1409393db040ca
+audit-from: 82583fc444cce4d7ed42ddb15cf32e2390f956ec
 ---
 # Architecture audit log
 
@@ -281,3 +281,19 @@ line-count crossings. Plans 2606260211,
 2606260614, and 2606260615 closed.
 
 No blockers, tax, or nice-to-have.
+
+## Audit 2026-06-28 (range: 0ededb3..82583fc)
+
+Plan 219 routes `cmd/mdsmith` and the LSP
+through `pkg/mdsmith.Session`. Five perf
+hot-path commits land. Plan 233 adds a
+numeric heading-level option to `<?include?>`.
+Plan 217 ships the Obsidian plugin WASM
+runtime. VS Code and LSP TypeScript fixes.
+479 Go sources; 26 TypeScript sources outside
+fixtures.
+
+No blockers. No rule-to-rule DIP violations.
+No SRP breaches. No file crossed 1 000 lines.
+All new production functions have dedicated
+unit tests.