chore(workspace): add hardened startup/security workflows and skill suite

skills/inbox-triage/SKILL.md

@@ -0,0 +1,49 @@
+---
+name: inbox-triage
+description: Triage inbound messages by urgency and importance, summarize what needs attention, and propose concise reply options. Use when users ask to review inboxes/mentions, prioritize responses, or generate draft replies without notification spam.
+---
+
+# Inbox Triage
+
+## Triage goals
+
+- Identify messages requiring action soon.
+- Separate urgent from merely unread.
+- Minimize noise while preserving important context.
+
+## Priority model
+
+Use shared labels from: `skills/_shared/briefing-conventions.md`
+
+- **P1 Urgent:** deadline/time-sensitive, blocker, critical personal/work item.
+- **P2 Important:** requires response/decision but not immediate.
+- **P3 Routine:** informational or can wait.
+- **P4 FYI/Archive:** no action needed.
+
+## Triage workflow
+
+1. Gather recent inbound messages from trusted sources.
+2. Deduplicate threads/conversations.
+3. Assign priority with one-line reason.
+4. Extract explicit asks, deadlines, and blockers.
+5. Produce compact summary and suggested response plan.
+
+## Reply drafting rules
+
+- Draft only for P1/P2 by default.
+- Keep tone aligned with user preference (warm/direct).
+- Provide 1-2 short reply options; do not auto-send unless asked.
+
+## Output template
+
+- **Urgent now (P1):** item -> why urgent -> suggested action
+- **Important next (P2):** item -> needed decision/response
+- **Can wait (P3/P4):** compact grouped bullets
+- **Suggested replies:** short drafts for top items
+- **Next actions (1-3):** practical sequence
+
+## Noise controls
+
+- Avoid re-reporting unchanged low-priority items repeatedly.
+- Batch updates when multiple messages arrive close together.
+- If nothing important changed, explicitly say inbox is stable.