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/http_request/src/index.ts

@@ -3,12 +3,8 @@
  *
  * POST / → JSON input → WASM (WASI preview1 stdin/stdout) → JSON output
  *
- * 方案 A:import cypher-executor/src/lib/wasi-shim.ts 的 `createWasiShim`
- * 提供單一 `http_request` host function(fetch → 回 response body 原文)。
- * 這個 Worker 不需要 crypto / kv_get(無 credential 解密職責)。
- *
- * Credential 注入路徑:cypher-executor auth-dispatcher 會先 POST 到對應 auth primitive Worker,
- * 把 auth headers 合進本 Worker 的 input(例:`_auth_headers`)。
+ * host function: http_request（fetch → 回 response body 原文）
+ * 此 Worker 不做 credential 注入，只提供通用 HTTP 能力。
  */
 
 import componentWasm from '../component.wasm' assert { type: 'webassembly' };
@@ -57,7 +53,7 @@ async function runWasm(input: unknown): Promise<unknown> {
             }
           }
         } catch {
-          // 忽略 header parse 錯誤
+          // ignore header parse errors
         }
       }
       const init: RequestInit = { method, headers };
@@ -65,7 +61,6 @@ async function runWasm(input: unknown): Promise<unknown> {
         init.body = body;
       }
       const res = await fetch(url, init);
-      // WASM 端直接 json.Unmarshal 回傳內容,這裡回 response body 原文
       return await res.text();
     },
   };
@@ -77,19 +72,11 @@ 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();
+  const stderr = shim.getStderr().trim();
+  if (stderr) console.error('[http_request wasm stderr]', stderr);
   if (!stdout) throw new Error('WASM component produced no output');
   return JSON.parse(stdout);
 }