Removes MomSessionManager which was missing methods expected by AgentSession
(appendMessage, getBranch, etc.), causing runtime crashes.
Now uses the standard SessionManager from coding-agent with a fixed context.jsonl
path per channel. The syncLogToSessionManager function handles syncing messages
from log.jsonl using SessionManager's public API.
Ref #595
Track all thread message timestamps during a run. When response is
[SILENT], delete all thread messages before deleting the main message.
This prevents the 'This message was deleted' tombstone in Slack.
When mom responds with just [SILENT], the status message is deleted
and nothing is posted to Slack. Useful for periodic events that check
for activity but find nothing to report.
- log.jsonl is source of truth, context.jsonl syncs from it at run start
- Backfill fetches missing messages from Slack API on startup
- Messages sent while mom is busy are logged and synced on next run
- Channel chatter (no @mention) logged but doesn't trigger processing
- Pre-startup messages (replayed by Slack) logged but not processed
- Stop command executes immediately, not queued
- Session header written immediately on new session creation
- Deduplicate messages by timestamp
- Strip @mentions from backfilled messages
- Remove old slack.ts and main.ts, rename *-new.ts versions
Working Indicator:
- Add '...' to channel messages while mom is processing
- Automatically removed when work completes or stops
- Applies to working message, not status messages
Improved Stop Command:
- Posts separate 'Stopping...' message that updates to 'Stopped'
- Original working message continues updating with tool results
- Clean separation between status and work output
- Properly handles abort during multi-step operations
Clean Stop Reason Handling:
- Agent run() now returns { stopReason } instead of throwing
- Handle 'aborted', 'error', 'stop', 'length', 'toolUse' cases cleanly
- No more exception-based control flow
- Track stopReason from assistant message.stopReason field
New SlackContext Methods:
- replaceMessage() - replace message text instead of appending
- setWorking() - add/remove working indicator
- Improved context tracking for stop command updates
Major improvements to mom's logging and cost reporting:
Centralized Logging System:
- Add src/log.ts with type-safe logging functions
- Colored console output (green=user, yellow=mom, dim=details)
- Consistent format: [HH:MM:SS] [context] message
- Replace scattered console.log/error calls throughout codebase
Usage Tracking & Cost Reporting:
- Track tokens (input, output, cache read/write) and costs per run
- Display summary at end of each run in console and Slack thread
- Example: 💰 Usage: 12,543 in + 847 out (5,234 cache read) = $0.0234
Prompt Caching Optimization:
- Move recent messages from system prompt to user message
- System prompt now mostly static (only changes with memory files)
- Enables effective use of Anthropic's prompt caching
- Significantly reduces costs on subsequent requests
Model & Cost Improvements:
- Switch from Claude Opus 4.5 to Sonnet 4.5 (~40% cost reduction)
- Fix Claude Opus 4.5 cache pricing in ai package (was 3x too expensive)
- Add manual override in generate-models.ts until upstream fix merges
- Submitted PR to models.dev: https://github.com/sst/models.dev/pull/439
UI/UX Improvements:
- Extract actual text from tool results instead of JSON wrapper
- Cleaner Slack thread formatting with duration and labels
- Tool args formatting shows paths with offset:limit notation
- Add chalk for colored terminal output
Dependencies:
- Add chalk package for terminal colors
