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>

.component-builds/cron/src/index.ts

@@ -49,17 +49,7 @@ async function runWasm(input: unknown): Promise<unknown> {
     shim.imports,
   );
   shim.setMemory(instance.exports.memory as WebAssembly.Memory);
-
-  const start = (instance.exports._start ?? instance.exports.main) as () => void;
-  if (typeof start !== 'function') {
-    throw new Error('WASM missing _start or main export');
-  }
-
-  try {
-    start();
-  } catch (e) {
-    if (!(e instanceof Error && e.message === 'wasm exit: 0')) throw e;
-  }
+  await shim.run(instance);
 
   const stdout = shim.getStdout().trim();
   if (!stdout) throw new Error('WASM component produced no output');