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>

registry/components/claude_api/component.contract.yaml

@@ -0,0 +1,75 @@
+canonical_id: "claude_api"
+display_name: "Claude AI 對話"
+category: "ai"
+version: "v2"
+wasi_target: "preview1"
+stability: "floating"
+runtime_compat:
+  - "cf-workers"
+  - "workerd"
+  - "wazero"
+constraints:
+  max_size_kb: 2048
+  max_cold_start_ms: 80
+  no_network_syscall: false
+  no_filesystem_syscall: true
+  io_model: "stdin_stdout_json"
+input_schema:
+  type: object
+  required: [mira_token, prompt]
+  properties:
+    mira_token:
+      type: string
+      description: Mira daemon Bearer token（Hetzner cloud-cto Mira daemon 的 MIRA_TOKEN）
+    prompt:
+      type: string
+      description: 要送給 Mira 的訊息（已內建 Mira 副駕 persona，不需重複設角色）
+    mira_url:
+      type: string
+      description: Mira daemon URL，預設 https://mira.uncle6.me
+      default: "https://mira.uncle6.me"
+    timeout_ms:
+      type: integer
+      description: Daemon 協商模式 timeout，預設 25000ms（協商上限）
+      default: 25000
+output_schema:
+  type: object
+  properties:
+    success:
+      type: boolean
+    data:
+      type: object
+      description: 同步完成時的回應
+      properties:
+        text: { type: string, description: Mira 的回覆文字 }
+        task_id: { type: string }
+        model: { type: string, description: 「實際 routing 用的模型（haiku / sonnet）」 }
+    pending:
+      type: boolean
+      description: 「true 時表示 daemon 切到非同步模式，task 還在跑，需 polling」
+    task_id:
+      type: string
+      description: pending=true 時用此 id polling
+    poll_url:
+      type: string
+      description: GET 此 URL 查詢任務進度 / 結果
+    error:
+      type: string
+gherkin_tests:
+  - scenario: "缺 mira_token"
+    given: '{"prompt":"hi"}'
+    then_contains: '{"success":false'
+  - scenario: "簡短對話 25s 內回完"
+    given: '{"mira_token":"...","prompt":"1+1=?"}'
+    then_contains: 'success'
+tags: [ai, llm, claude, mira, primitive]
+description: "呼叫 Mira daemon (Hetzner cloud-cto) 進行 AI 對話。Daemon 內部用 Claude Agent SDK，內建 Mira 副駕 persona，可長執行任務。所有 mira-app 的 AI workflow（自動回覆、wiki 合成、新聞註解）都用此零件。"
+config_example: |
+  ai_reply:
+    mira_token: "{{secret.mira_token}}"
+    prompt: |
+      用戶 leo 在 mira 河道發了這則貼文：
+      「{{trigger.post_content}}」
+
+      請以副駕 AI 的身份留言回應，簡短繁中，務實。
+    timeout_ms: 25000