feat(arcrun): mira wiki page with tag filter + accumulated WIP

- landing/app/mira/wiki: tag=mira-wiki list now shows all wiki paragraphs
  (depends on KBDB tag filter exposed in matrix/kbdb commit, separate repo)
- landing: app/mira hub + feed split + various WIP from prior sessions
- registry/components: claude_api / kbdb_create_block / kbdb_get / km_writer /
  platform_crypto / auth_oauth2 contracts + main.go (accumulated)
- .component-builds: pkg-lock updates + index.ts adjustments (WIP)
- .agents/specs/arcrun/frontend-redesign: design notes
- docs/test_credentials, docs/user_requirements/arcrun-landing-page: WIP docs
- cypher-executor: auth-dispatcher / wasi-shim adjustments (WIP)

Includes accumulated work from prior sessions plus the wiki UI tag-filter
update that surfaces the AI-generated wiki paragraphs at /mira/wiki.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

cypher-executor/wrangler.toml

@@ -102,6 +102,8 @@ service = "arcrun-ai-transform-run"
 ENVIRONMENT = "production"
 # MULTI_TENANT = "true"
 # ENCRYPTION_KEY 透過 wrangler secret set 設定
+KBDB_BASE_URL = "https://kbdb.finally.click"
+# KBDB_INTERNAL_TOKEN 透過 wrangler secret set 設定
 
 [[routes]]
 pattern = "cypher.arcrun.dev/*"