feat(heartbeat): add Discord channel monitoring with lurk skill

- Lurk skill runs from main session using discord.readMessages
- Reads all 11 lurk channels hourly
- Persists notable activity to /memory/discord/YYYY-MM-DD.md
- Single daily file for all channels
- HEARTBEAT.md: simple 6-step checklist
- Triage skill reads Discord daily files for cross-correlation

clawdinator/workspace/HEARTBEAT.md

@@ -3,28 +3,8 @@
 Hourly SITREP checklist:
 
 1. Read AGENTS.md comms rules (terse chat, details to files)
-2. Read `/memory/index.md` and `/memory/sitrep-latest.md` for context
-3. Persist any relevant channel updates to today's daily memory file
-4. Run triage skill (`skills/triage/SKILL.md`):
-   - Read `/memory/github/prs.md` and `/memory/github/issues.md`
-   - Compare against previous sitrep for changes
-5. Write SITREP to `/memory/sitrep-latest.md` (overwrite):
-   ```markdown
-   # SITREP YYYY-MM-DDTHH:MMZ
-
-   ## 🔥 Fires
-   - Active issues needing immediate attention
-
-   ## ⚡ NOW
-   - Single most important action to take
-
-   ## 📊 Dashboard
-   - PRs: X open (Y approved waiting)
-   - Issues: X open (Y bugs, Z features)
-
-   ## 🔄 Changes since last SITREP
-   - NEW/CLOSED/UPDATED items
-   ```
-6. Append summary to today's daily file (`/memory/daily/YYYY-MM-DD.md`)
-7. Post terse summary to chat (3-5 lines, link to sitrep-latest.md)
-8. If nothing needs attention, reply HEARTBEAT_OK
+2. Read `/memory/sitrep-latest.md` for previous context
+3. Run lurk skill (`skills/lurk/SKILL.md`) — read Discord channels, persist to `/memory/discord/YYYY-MM-DD.md`
+4. Run triage skill (`skills/triage/SKILL.md`) — analyze GitHub + Discord, write SITREP
+5. Post summary to chat (5-10 lines)
+6. If nothing needs attention, reply HEARTBEAT_OK

clawdinator/workspace/skills/lurk/SKILL.md

@@ -0,0 +1,66 @@
+---
+name: lurk
+description: Monitor Discord channel activity and persist notable items to memory. Run from main session during heartbeat.
+---
+
+# Lurk Skill
+
+Monitor Discord lurk channels and persist notable activity to shared memory.
+
+## When to Use
+
+- Hourly heartbeat (step 3)
+- Manual trigger to capture current channel state
+
+## How to Run
+
+Use `discord.readMessages` to read recent messages from each lurk channel:
+- #help (1456457255208878100) — support fires
+- #general (1456350065223270435) — community pulse
+- #clawdributors (1458141495701012561) — contributor coordination
+- #messaging-infra (1458052766831480996) — transport integrations
+- #nix-packaging (1457003026412736537) — nix reproducibility
+- #architecture (1457810851556888833) — architecture talk
+- #clawdhub (1457886486044213411) — hub activity
+- #models (1456704705219661980) — model discussions
+- #skills (1456891440897724637) — skill showcases
+- #showcase (1456609488202105005) — user showcases
+- #security (1458861780976795782) — security discussion
+
+## What to Capture
+
+**Persist these:**
+- Support issues / bug reports
+- Questions that indicate user confusion
+- Feature requests with discussion
+- Anything referencing GitHub issues/PRs
+- Repeated topics (multiple users, same issue)
+- Announcements or important updates
+
+**Skip these:**
+- Casual chat / banter
+- Single-word reactions
+- Bot spam
+- Already-resolved questions
+
+## Output
+
+Append to `/memory/discord/YYYY-MM-DD.md`:
+
+```markdown
+## HH:MM #channel-name
+- [brief summary of notable item]
+- Links to #NNN if references GitHub issue
+- @username if relevant
+
+## HH:MM #channel-name
+- [another item]
+```
+
+## Constraints
+
+- Be selective. Only notable items.
+- Include timestamp and channel name.
+- Keep each entry to 1-2 lines.
+- Cross-reference GitHub issues when mentioned.
+- If nothing notable: don't write anything, reply HEARTBEAT_OK.

clawdinator/workspace/skills/triage/SKILL.md

@@ -29,9 +29,11 @@ Read these files to understand current state:
    - `/memory/project.md` — project goals and priorities
    - `/memory/architecture.md` — architecture decisions
 
-4. **Discord signals**:
-   - Recent messages in conversation context from lurk channels
+4. **Discord signals** (persisted by lurk skill):
+   - `/memory/discord/YYYY-MM-DD.md` — today's channel activity
+   - `/memory/discord/YYYY-MM-DD.md` — yesterday's (for context)
    - Cross-reference with GitHub issues where relevant
+   - Multiple Discord reports of same issue = elevated priority
 
 ## Your Task