chore(beads): add 18 NOTE beads from per-note-search PRD

Break down docs/prd-per-note-search.md into granular agent-executable beads:
- Phase 0 (0A-0D): Stable note identity via upsert/sweep
- Phase 1 (1A-1E): lore notes CLI command
- Phase 2 (2A-2I): Per-note documents in FTS/embedding pipeline
Wire 20 dependency edges matching PRD dependency graph.
Close bd-2l3s (replaced by granular beads).

src/cli/autocorrect.rs

@@ -185,7 +185,6 @@ const COMMAND_FLAGS: &[(&str, &[&str])] = &[
             "--no-detail",
         ],
     ),
-    ("drift", &["--threshold", "--project"]),
     (
         "init",
         &[