hermes - 💡(How to fix) Fix feat: Interactive model picker for Feishu platform (like Telegram)

Feature Request

Problem

The /model command on Feishu currently falls back to plain text output because the Feishu adapter does not implement send_model_picker. On Telegram, users get an interactive inline-keyboard picker with two-step drill-down (provider → model), but on Feishu they must type the model name manually.

Proposed Solution

Implement send_model_picker on FeishuAdapter using Feishu interactive cards with buttons:

1. send_model_picker method — Builds a Feishu interactive card with provider buttons (2 per row), current model info, and a Cancel button. Stores picker state keyed by chat_id.

2. Card callback routing — Modify _on_card_action_trigger to distinguish model picker actions (e.g. hermes_action: "mp:select") from approval actions, and route them to a new handler.

3. _handle_model_picker_action method — Handles provider selection, model selection with pagination (page size 8), back navigation, and cancel. Returns a new card via P2CardActionTriggerResponse to update the card in-place.

4. _build_model_picker_card helper — Builds the Feishu card JSON for each state (provider list, model list, confirmation).

Key Differences from Telegram

• Telegram uses InlineKeyboardMarkup with callback_data strings; Feishu uses interactive card buttons with value dicts
• Telegram edits the message in-place; Feishu can return a new card via P2CardActionTriggerResponse
• Both support the same two-step drill-down flow

Environment

• Hermes Agent version: latest (2026-05-11)
• Platform: Feishu (DM and group chats)
• Related: Telegram already has this feature (gateway/platforms/telegram.py:1617-1895)

Additional Context

The infrastructure (interactive cards, button callbacks, card updates) is already in place in the Feishu adapter via send_exec_approval. Only the model picker logic needs to be added.