Lightweight containerized prosody tooling + moved auth scripts + xmpp reconnect/auth stabilization

artifacts/plans/04-identity-resolution-and-merge.md

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+# Feature Plan: Identity Resolution and Merge
+
+## Goal
+Improve person graph quality by suggesting and applying safe merges across transport identifiers.
+
+## Why This Fits GIA
+- Core value of universal inbox depends on clean `Person` identity graph.
+
+## Scope
+- Heuristic scoring for candidate merges.
+- Manual review queue with approve/reject.
+- Merge operation with audit trail and undo window.
+
+## Implementation
+1. Add scoring service using signals: normalized phone, username similarity, name overlap, shared chat co-occurrence.
+2. Add `IdentityMergeSuggestion` model with score + reasons.
+3. Add UI panel to review/approve merges.
+4. Implement safe merge transaction (`PersonIdentifier` reassignment, metadata merge rules).
+5. Emit audit events and rollback snapshots.
+
+## Acceptance Criteria
+- Suggestions generated deterministically and explain reasons.
+- Merge is idempotent and reversible within configured window.
+- No identifier is lost or orphaned.
+
+## Out of Scope
+- Fully automatic merge without human approval.