docs(07): capture phase context

.planning/phases/07-main-session-skill/07-DISCUSSION-LOG.md

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+# Phase 7: Main Session Skill - Discussion Log
+
+> **Audit trail only.** Do not use as input to planning, research, or execution agents.
+> Decisions are captured in CONTEXT.md — this log preserves the alternatives considered.
+
+**Date:** 2026-06-14
+**Phase:** 7-Main Session Skill
+**Areas discussed:** Session start behavior, Jira integration, Confluence docs, Session-end behavior
+
+---
+
+## Session Start Behavior
+
+**User's choice:** Auto-check hindsight for similar sessions (<2 weeks). Jira ticket creation should prompt. Doc loading should prompt — docs need to search.
+
+**Notes:** Three-tier behavior — similar sessions (auto), Jira (prompt), docs (prompt + search by tag).
+
+---
+
+## Jira Integration
+
+**User's choice:** Always create Task type. Default board configurable later. Query available epics and cache in long-term memory — fetch occasionally or when asked.
+
+**Notes:** Epic cache lives in hindsight memory. Don't fetch epics every session — use cached version, refresh on demand.
+
+---
+
+## Confluence Doc Search
+
+**User's choice:** Create a tag for ngn-agent. Search Confluence by that tag and do matching.
+
+**Notes:** Tag name TBD (default: `ngn-agent`). Present matching pages, user selects which to load.
+
+---
+
+## Session-End Behavior
+
+**User's choice:** Always ask before Jira/Confluence updates. Always save session to hindsight (no prompt).
+
+**Notes:** Session save is automatic. Jira comment and Confluence update are prompted.
+
+---
+
+## the agent's Discretion
+
+- Exact tag name for Confluence searches
+- Epic cache refresh interval
+- Similar session display format
+
+## Deferred Ideas
+
+- Daily reporting cron (Phase 8)
+- Stale session archive (Phase 8)
+- Auto-create Jira tickets (user wants manual control)