feat(feishu): replace built-in SDK with community plugin

Replace the built-in Feishu SDK with the community-maintained
clawdbot-feishu plugin by @m1heng.

Changes:
- Remove src/feishu/ directory (19 files)
- Remove src/channels/plugins/outbound/feishu.ts
- Remove src/channels/plugins/normalize/feishu.ts
- Remove src/config/types.feishu.ts
- Remove feishu exports from plugin-sdk/index.ts
- Remove FeishuConfig from types.channels.ts

New features in community plugin:
- Document tools (read/create/edit Feishu docs)
- Wiki tools (navigate/manage knowledge base)
- Drive tools (folder/file management)
- Bitable tools (read/write table records)
- Permission tools (collaborator management)
- Emoji reactions support
- Typing indicators
- Rich media support (bidirectional image/file transfer)
- @mention handling
- Skills for feishu-doc, feishu-wiki, feishu-drive, feishu-perm

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

extensions/feishu/skills/feishu-doc/SKILL.md

@@ -0,0 +1,105 @@
+---
+name: feishu-doc
+description: |
+  Feishu document read/write operations. Activate when user mentions Feishu docs, cloud docs, or docx links.
+---
+
+# Feishu Document Tool
+
+Single tool `feishu_doc` with action parameter for all document operations.
+
+## Token Extraction
+
+From URL `https://xxx.feishu.cn/docx/ABC123def` → `doc_token` = `ABC123def`
+
+## Actions
+
+### Read Document
+
+```json
+{ "action": "read", "doc_token": "ABC123def" }
+```
+
+Returns: title, plain text content, block statistics. Check `hint` field - if present, structured content (tables, images) exists that requires `list_blocks`.
+
+### Write Document (Replace All)
+
+```json
+{ "action": "write", "doc_token": "ABC123def", "content": "# Title\n\nMarkdown content..." }
+```
+
+Replaces entire document with markdown content. Supports: headings, lists, code blocks, quotes, links, images (`![](url)` auto-uploaded), bold/italic/strikethrough.
+
+**Limitation:** Markdown tables are NOT supported.
+
+### Append Content
+
+```json
+{ "action": "append", "doc_token": "ABC123def", "content": "Additional content" }
+```
+
+Appends markdown to end of document.
+
+### Create Document
+
+```json
+{ "action": "create", "title": "New Document" }
+```
+
+With folder:
+
+```json
+{ "action": "create", "title": "New Document", "folder_token": "fldcnXXX" }
+```
+
+### List Blocks
+
+```json
+{ "action": "list_blocks", "doc_token": "ABC123def" }
+```
+
+Returns full block data including tables, images. Use this to read structured content.
+
+### Get Single Block
+
+```json
+{ "action": "get_block", "doc_token": "ABC123def", "block_id": "doxcnXXX" }
+```
+
+### Update Block Text
+
+```json
+{
+  "action": "update_block",
+  "doc_token": "ABC123def",
+  "block_id": "doxcnXXX",
+  "content": "New text"
+}
+```
+
+### Delete Block
+
+```json
+{ "action": "delete_block", "doc_token": "ABC123def", "block_id": "doxcnXXX" }
+```
+
+## Reading Workflow
+
+1. Start with `action: "read"` - get plain text + statistics
+2. Check `block_types` in response for Table, Image, Code, etc.
+3. If structured content exists, use `action: "list_blocks"` for full data
+
+## Configuration
+
+```yaml
+channels:
+  feishu:
+    tools:
+      doc: true # default: true
+```
+
+**Note:** `feishu_wiki` depends on this tool - wiki page content is read/written via `feishu_doc`.
+
+## Permissions
+
+Required: `docx:document`, `docx:document:readonly`, `docx:document.block:convert`, `drive:drive`