chore(roadmap): promote conflict-dialog "Save as new chapter" TODO to PS-13

The inline TODO at `ConflictResolutionDialog.tsx:114` pointed at a
deferred v1 feature. An inline TODO is the wrong home for a tracked
backlog item - the comment rots in place while the ROADMAP is where
similar deferred features live.

Removed the TODO and opened PS-13 in ROADMAP.md with enough context
(new backend endpoint, i18n keys, E2E coverage, position ordering
discussion) for a future session to pick it up. Audit doc updated.

Polish audit item #8 resolved; last open item from the 2026-04-18
polish audit is now closed.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: astrapisixtynine

docs/ROADMAP.md

@@ -59,7 +59,8 @@ Pre-built structures for common book genres. Lowers the entry barrier for new us
 - [x] PS-10: trivial cleanup of the `plugin_config` unused-parameter warning in `backend/app/main.py` `_check_license`. Pluginforge's `pre_activate` signature requires the second argument, so the parameter was prefixed with `_` (`_plugin_config`) to silence the warning while preserving the hook contract.
 - [x] PS-11: regression tests for the ruamel.yaml round-trip (`backend/tests/test_yaml_io.py`, 5 tests covering byte-identical round-trip, `# INTERNAL` comment survival, quote-style preservation, missing-file errors, and parent-directory creation) + missing Spanish accents fixed in 4 plugin YAMLs (`translation.yaml`, `kinderbuch.yaml`, `kdp.yaml`, `audiobook.yaml`: Traducción, página, validación, publicación, Generación, capítulos).
 - [x] PS-12: removed .gitignore rule blocking session journals; aligned ai-workflow.md
-- [ ] PS-13+: future polish items, surface as found
+- [ ] PS-13: "Save as new chapter" action in `ConflictResolutionDialog`. Third button alongside Keep/Discard that clones the local-edit into a fresh chapter appended after the current one, then pulls the server content into the current chapter. Requires new backend endpoint (e.g. `POST /api/books/{id}/chapters/fork`), i18n keys across 8 locales, E2E coverage, and scope discussion for position ordering. Deferred from v1 of the 409 conflict flow; inline TODO removed in favor of this tracker entry.
+- [ ] PS-14+: future polish items, surface as found
 
 ### 4. Git-based backup (priority: low, existing .bgb covers daily needs)
 

docs/audits/polish-audit-2026-04-18.md

@@ -11,7 +11,8 @@ strings, stale docs, test coverage gaps, existing audit items.
 ### 1. TODOs / FIXMEs
 
 - 1 match: `frontend/src/components/ConflictResolutionDialog.tsx:114`
-  - "Save as new chapter" deferred from v1
+  - "Save as new chapter" deferred from v1 (RESOLVED in this
+    session: inline TODO removed; tracked as PS-13 in ROADMAP)
 
 ### 2. Deprecations / warnings
 
@@ -94,7 +95,7 @@ tests.
 | 5 | Test coverage | `backup_history.py` zero tests | Medium | Medium | **Revised 2026-04-18**: `test_backup_history.py` already existed with 8 unit tests covering the class API. Gaps closed in this session: persistence roundtrip + parent-directory creation + `GET /api/backup/history` HTTP route test (3 new tests, total 11). |
 | 6 | Test coverage | `archive_utils.py` / `asset_utils.py` / `markdown_utils.py` | Medium | Medium | **Resolved 2026-04-18** (34 direct unit tests in `test_backup_utils_direct.py`) |
 | 7 | Test coverage | `licensing.py` zero tests (security-adjacent) | Large | High | **Resolved 2026-04-18** (35 tests in `test_licensing.py` covering payload/validator/store/helpers including tampered-signature, wrong-secret, expired, and wildcard paths) |
-| 8 | TODO | Deferred "Save as new chapter" v1 in conflict dialog | Large | Low | Open |
+| 8 | TODO | Deferred "Save as new chapter" v1 in conflict dialog | Large | Low | **Resolved 2026-04-18**: inline TODO removed; tracker entry PS-13 opened in ROADMAP so the deferred feature lives where similar backlog items are managed |
 
 ## How to re-run this audit
 

frontend/src/components/ConflictResolutionDialog.tsx

@@ -111,7 +111,6 @@ export default function ConflictResolutionDialog({conflict, onKeepLocal, onDisca
               <RotateCcw size={14} aria-hidden />
               {t("ui.conflict.discard_local", "Meine Änderungen verwerfen")}
             </button>
-            {/* TODO: "Save as new chapter" - deferred from v1 */}
           </div>
         </Dialog.Content>
       </Dialog.Portal>