feat(f40): row bookmarks, tags, and notes

CHANGELOG.md

@@ -8,6 +8,25 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Added
 
+- **Row bookmarks, tags & notes** (F40): mark and annotate records without
+  touching the source data. Star or flag a row, apply multiple named tags
+  (a per-document tag namespace with usage counts), and attach a row note or
+  per-column cell notes with an optional author label and created/updated
+  timestamps. Annotations are pinned by row identity — a user-selected
+  composite key (survives reordering; duplicate keys are reported ambiguous)
+  or, otherwise, the source record number plus a content fingerprint — and are
+  re-matched on reparse or external change into a matched / ambiguous /
+  orphaned review list, so a note is never silently attached to an uncertain
+  row (a deleted row keeps its annotation as an orphan until the delete is
+  committed or reverted). List every annotation in a side panel with
+  jump-to-row and a review queue for the ambiguous and orphaned ones; filter
+  the grid by annotation state (starred, flagged, tagged, has-note) through
+  the existing filter view; copy a tag into a real column as one previewed,
+  undoable operation; and export the annotations to JSON or CSV on an
+  explicit action. Annotations are stored in
+  the active project's workspace file or, with no project open, a versioned
+  `<file>.ceesvee-notes.json` sidecar written atomically — never inside the
+  CSV, and never in an ordinary data export.
 - **JSON & JSON Lines interoperability** (palette → "Open JSON…" and
   "Export as JSON…"): open structured JSON without pre-converting to CSV —
   an array of objects, an array of arrays, JSON Lines / NDJSON, or an

README.md

@@ -240,6 +240,18 @@ and faithful on large, real-world delimited files.**
 - **Change inspector** — see every unsaved operation with before/after
   values, jump to changes, and selectively revert cells, columns,
   operations, or everything — each revert itself undoable.
+- **Row bookmarks, tags & notes** — star or flag rows, apply multiple
+  named tags, and attach a row note or per-column cell notes (with an
+  optional author and created/updated timestamps) without ever touching
+  the source data. Annotations are pinned by row identity — a chosen
+  composite key (survives reordering; duplicate keys are reported) or the
+  source record plus a content fingerprint — and re-match on reparse into
+  a matched / ambiguous / orphaned review list, so a note is never
+  silently attached to an uncertain row. List them in a side panel with
+  jump-to-row, filter the grid by annotation state, copy a tag into a real
+  column as one previewed, undoable step, and export to JSON or CSV.
+  Stored in the open project or a versioned `<file>.ceesvee-notes.json`
+  sidecar written atomically — never inside the CSV.
 - Multi-column **sort** (ascending/descending per key).
 - **Find & replace** — plain text or regex, scoped to a selection or the whole file.