fix(feishu): render Markdown tables using interactive card with table component

[highland0971]

Problem

Markdown tables were silently dropped in Feishu messages:

1. _MARKDOWN_HINT_RE didn't detect | character for table syntax
2. Feishu md tag doesn't support Markdown tables - content returns empty [[]]

Solution

1. Add (^\s*\|) pattern to _MARKDOWN_HINT_RE for table detection
2. Add _parse_markdown_table() to extract table structure from content
3. Add _build_table_card_payload() to generate Feishu interactive card JSON
4. Modify _build_outbound_payload() to use interactive msg_type for tables

Feishu Table Format

Reference: github.com/alexaundre/mycc_init buildTableCard

{
  "tag": "table",
  "columns": [{"name": "col_0", "display_name": "Header", "data_type": "text", "width": "auto"}],
  "rows": [{"col_0": "value"}]  // object format with keys matching column names
}

Testing

• Local instance: verified table rendering
• CT108 (多吉) instance: deployed and verified

Screenshots

Before: tables silently dropped, empty content
After: tables render correctly as Feishu table component

[alt-glitch]

Likely duplicate of #12114 — same fix: route GFM tables to Feishu Card v2 native table component in gateway/platforms/feishu.py.

[C-fog]

多表格场景未处理

_parse_markdown_table() 只解析第一个 Markdown 表格就 break 了，after_table 中的后续表格以 lark_md 纯文本渲染，用户看到的是竖线原始文本而非表格。

复现： 一条消息包含多个表格时，只有第一个正确渲染为飞书 Card table 组件，其余全部退化。

建议修复方向： 循环解析多个表格，每个生成独立的 table 组件（飞书 Card 上限 5 个 table）。超过 5 个时可拆为多条消息或截断提示。

当前 workaround：手动拆成每天一条消息发送。

[teknium1]

Thanks for tackling a real Feishu rendering limitation. The blank-message symptom is already mitigated on current main: plugins/platforms/feishu/adapter.py:4524-4534 detects pipe tables and routes them to text, but main does not yet provide the native interactive table rendering proposed here.

Problems

• _parse_markdown_table() stops after the first matched table. Later tables remain in after_table and _build_table_card_payload() emits that content as lark_md, matching the multiple-table failure reported in the discussion.
• The PR adds no tests, and its only changed path, gateway/platforms/feishu.py, was moved to plugins/platforms/feishu/adapter.py by 5600105478ffde29d7566b45421b100eaa29c4ef.

Suggested changes

• Port the implementation to plugins/platforms/feishu/adapter.py and retain text fallback for unsupported card payloads.
• Parse ordered text/table segments so multiple tables are rendered or safely capped.
• Add current-surface tests for multi-table input, fenced-code false positives, and fallback behavior.

Automated hermes-sweeper review.