build: wikitool new project - Seite und Tracker-Projekt unter einem Namen (#126)

Files changed:
- CHANGES.md
- VERSION
- tools/CONTRACT.md
- tools/chemenu/commands/new_page.py
- tools/chemenu/errors.py
- tools/chemenu/review.py
- tools/chemenu/tasks/__init__.py
- tools/chemenu/tests/test_new_page.py

tools/CONTRACT.md

@@ -94,6 +94,7 @@ tools/wikitool <command> --help
 | `new concept --name "<Name>" --set concept_type=<t> ...` | Scaffold `kb/concepts/<Name>.md` |
 | `new source --name "<Name>" --set raw_files=raw/notes/x.md,raw/notes/y.md [--set source_url=<URL>] [--set entities=A,B] [--set concepts=C,D]` | Scaffold `kb/sources/Source - <Name>.md` (prefix added automatically) with a `raw_files:` list (rejects paths that don't exist) |
 | `new comparison --name "X vs Y" --set entities=X,Y` | Scaffold `kb/comparisons/X vs Y.md` |
+| `new project --name "<Name>" --set responsibility=<bereich> [--resume]` | Scaffold `kb/gtd/<bereich>/<Name>.md` **and**, if `.wikitool-tasks.json` configures a task tracker, a same-named tracker project - one name, one identity. Tracker before page: the tracker side is settled first, so a failure past that point leaves a tracker project with no page - a state `review`'s check 3 already reports - never a page with no tracker project. No tracker configured is a legitimate, explicitly announced state (page only). A name already taken (case-insensitively) in `kb/` or the tracker is refused outright, naming where it was found, and creates nothing. A provider with no write path of its own (Super Productivity has no project-creation endpoint) raises `chemenu.errors.HumanInterventionRequired`; the command shows its instructions and exits **42** (`needs_clearance()`, same posture as the four named gates, without being a fifth one - see that class's docstring), creating nothing. `--resume` is how a later run tells the command a human has done what that message asked: it re-verifies via the read path (`find_project`) before continuing to page creation, rather than trusting the claim, and repeats the same 42 if the tracker still doesn't have it. `--resume` on any other type is refused |
 | `touch --page "<Title>" [--summary "..."] [--provenance <v>] [--date YYYY-MM-DD] [--set field=value ...] [--add field=value ...] [--remove field=value ...] [--no-date] [--dry-run]` | Update a page's own frontmatter: bump `modified:` and optionally rewrite any field its type declares. `--summary`/`--provenance` are shorthands; `--set` reaches every other field and **replaces** its value, while `--add`/`--remove` change single elements of an array field (removing an absent element succeeds and says so). Repeating `--set` for one array field appends *within the call*, and `\,` is a literal comma - same rules as `new --set`. Refused with the command that owns them instead: `type:` (page-lifecycle), and the page-ref arrays `related:`/`sources:`/`entities:`/`concepts:` (`xref`). Everything else the schema declares is settable, and an unknown field lists what the page actually has. Schema-validates the fields it writes, and `raw_files:` entries must exist on disk. A source declares `date:` instead of `modified:`, and that is the *publication* date of the raw material - it is never bumped to today, and changes only when `--date` names a value explicitly. |
 | `rename --from "<Old>" --to "<New>" [--dry-run]` | Rename a page and repoint every reference to it: body `[[wikilinks]]` (aliases and anchors preserved), a `[^cite-id]` whose id was derived from the old title (refreshed to match the new one, both in its Footnotes definition and every reference to it), the page's own H1, and every page-ref frontmatter array declared by the type's `page_ref_fields:`. If `--from` is *not* a page but is referenced, it instead repoints those references onto the existing `--to` page and moves nothing - the fix for a reference spelled `act_runner` when the page is `Act Runner` |
 | `rm --page "<Title>" [--yes] [--dry-run]` | Delete a page and mechanically de-link it. Refuses without `--yes` while other pages still reference it. Strips ref-array entries and bare `- [[Title]]` / `- **label:** [[Title]]` bullets; leaves prose and inline citations in place and reports them |
@@ -309,6 +310,7 @@ is atomic, and whether a retry is safe.
 | Command | Exit 1 means | Atomic? | Retry policy |
 |---------|--------------|---------|--------------|
 | `new <type>` | Duplicate page title, unknown type, invalid `--set` value, or a `raw_files` path that doesn't exist | Yes - single file write | Not transient; fix the argument and retry once. Never hand-craft the page instead |
+| `new project` | Everything `new <type>` covers, **plus**: the name is already taken in the tracker (case-insensitively), or `--resume` was passed for a type other than `project` | **No** for the tracker-configured case - a tracker-project write (or its human-clearance request) happens before the kb/ page write, so a failure between the two leaves a tracker project with no page (a state `review`'s check 3 already reports), never a page with no tracker project. Still a single file write when no tracker is configured | A collision or a bad `--set` is not transient, same as `new <type>`. **Exit 42** (`NEEDS USER CLEARANCE`, not exit 1) is its own third outcome: the provider cannot create the project itself and a human must, per the printed instructions; re-run with `--resume` once that is done - it re-verifies via the read path rather than trusting the claim, and exits 42 again unchanged if the tracker still does not have it |
 | `touch` | Page not found; an invalid value for a field it writes; a field owned by another command (`type:`, a page-ref array) or absent from the type's schema; `--add`/`--remove` on a non-array field; a `raw_files:` path that doesn't exist | Yes - single file write, and every refusal happens before it | Fix the argument and retry once. Safe to re-run as-is: `--set` and `--add` are idempotent, and `--remove` of an already-absent element succeeds while reporting it |
 | `rename` | Neither `--from` nor `--to` is a page, target title already taken, or `--from` equals `--to` | No - one write per referencing page, then the file move | Safe to retry once as-is; each page's rewrite is idempotent. Use `--dry-run` first to see the blast radius. Never fix up references by hand instead |
 | `rm` | Page not found, **or** other pages still reference it and `--yes` was not passed | No - one write per referencing page, then the delete | For "still referenced": show the user the inbound list, get approval, then re-run with `--yes`. Prose references it reports afterwards are an editorial fix, not a retry |