feat: WhatsApp group agent overrides, pipeline block reply fix, and group management UI

[reski-rukmantiyo]

Summary

• Add WhatsApp group agent override configuration with per-group agent routing and __default__ sentinel handling
• Fix double WhatsApp message delivery caused by block reply emission for final answers — restrict block reply tracking in ObserveStage to intermediate tool-call responses only
• Add recursive config coercion for nested WhatsApp group overrides (string "true"/"false" → JSON booleans)
• Add WhatsApp group management UI to channel list with group display support
• Add human-readable names to WhatsApp group overrides and initialize project package manager

Commits

Commit	Description
ddd4f14e	feat: add WhatsApp group agent override configuration support
e66d978f	update
9665116f	refactor: improve WhatsApp group agent routing, recursive config coercion, and pipeline block reply emission logic
c9c1f030	refactor: restrict block reply tracking to intermediate tool calls and add WhatsApp group management UI
f0ac3bf9	feat: add WhatsApp group management and display support to channel list
120c45fa	feat: add human-readable names to WhatsApp group overrides and initialize project package manager

Test plan

• Send a message to WhatsApp (single-turn, no tool calls) — should receive exactly one reply
• Send a message to WhatsApp that triggers tool use — should receive intermediate block replies + final answer, no duplicates
• Configure group agent override → verify routing uses the override agent for that group
• Set group agent to __default__ → verify it falls back to channel default
• Verify WhatsApp groups tab in channel detail page shows group list with names
• Run go test ./internal/pipeline/... — all tests pass

🤖 Generated with Claude Code

[reski-rukmantiyo]

Still compatible up to v3.3.0...Nice!