chore: remove docs/generated, expand PLAN.md into full implementation plan

- Remove all docs/generated/* (stale research output from prior workflow)
- Rewrite PLAN.md as ordered implementation plan: 10 tasks by dependency + demo criticality
- Each task has owner, estimate, dependencies, specific files to create/modify
- Cut line separates must-ship from nice-to-have

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FFbfi4Cmb7BY75Wtne7bZn

.gitignore

@@ -35,3 +35,7 @@ Thumbs.db
 coverage/
 .cache/
 .turbo/
+
+# Ramis
+.remember/
+.claude/