Merge feat/post-location-override into main

Post-form location override (U1-U6) plus the code-review hardening, the
maplibre-CSS lazy <link>, and the test-entry leak fix. Bumps the user pin to
dd19995, the corresponding user/ merge-to-main commit.

CLAUDE.md conflicted because both sides changed it deliberately: main cut it
to rules-only (839a4d0, ed6e43a) while this branch added the map-doctrine
carve-out (829325c). Resolved to main's rules-only structure with the
carve-out ported into it — without it CLAUDE.md would forbid the second map
engine this feature deliberately ships. The descriptive detail stays in
docs/reference/architecture.md, per main's content-tiering convention.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/working/plans/2026-07-23-post-form-location-override.md

@@ -11,7 +11,20 @@ execution: code
 
 # Post Form Location Override - Plan
 
-**Status:** 📋 Not started
+**Status:** ✅ Complete (2026-07-24) — U1–U6 shipped, then hardened by a multi-agent code review the same day. The review found the design's stated server-side safety net (`cleanCoordinate()`) had never been committed, so it landed here; replaced a prefix-parsing coordinate check that accepted `48abc` / `48,85` / `35.0116S` (hemisphere silently flipped); closed three paths that bypassed the submit gate (draft restore, edit-mode prefill, map-load failure) because the gate read a CSS class no code set at init; added pin removal on blanked fields; made the geocode failure visible; and rewrote the U5 guard spec, which asserted only instantly-passing conditions and so could not fail. R8 and R13 above are revised accordingly.
+
+**Verified by a green run (2026-07-24).** The suite now executes end-to-end: `test-config` 22/22, `test-post` 6/6 (the `scripts/test-post.sh` shell suite — *not* the Playwright specs under `tests/ui/post/`, which is a separate set), and `location-override.spec.js` **20/20** — so the verifications below are no longer by inspection alone. Reaching that took fixing `make test-account` (the password was interpolated into an `sh -c` string, so a shell metacharacter in it killed every UI run), pinning `test-ui` to this checkout's own port, and repairing test cleanup, which had never been able to delete the root-owned entries Grav's Apache creates. See the commit `fix(test): close the test-entry leak into real trip content`.
+
+Also landed after the review: maplibre's stylesheet is now lazy-`<link>`ed at panel-open instead of statically bundled, cutting `post-form.css` from 92,244 to 26,784 raw bytes (14,528 → 5,631 gzip) on every `/post` load, with a new spec asserting both halves of that boundary.
+
+**Still open before merge:**
+- The `user/` submodule commits remain **unpushed by choice** (git-sync would deploy to prod). Merged to `main` locally on 2026-07-24 and the pin bumped; pushing `user/` — then the outer repo, in that order — is the remaining step and is deliberately left to the user to time.
+- Only one class of failure is left in `tests/ui/post/` + `tests/ui/map`: **64 passed, 6 failed**, all the `owner_username` cluster below. Nothing in this feature's scope is red.
+- ~~This worktree's `user/` branch has diverged from `user/`'s `main`~~ **Done** — `user/main` merged in (`7903432`). It was ahead on both content and theme fixes; `denmark-2026 published: true` came with it, so the local testing flip is gone. The one conflict was `js/post/post-form.js`, a generated bundle, resolved by rebuilding rather than hand-merging minified output.
+- ~~The `~/Projects` clone's `user/` carries two commits this clone cannot see~~ **Done** — merged in (`8a5cc52`). There is no second clone: `~/Projects` is a symlink to `~/Nextcloud/Projects`. What differs is the **submodule git dir** — a worktree gets `.git/worktrees/<name>/modules/user`, not the checkout's `.git/modules/user` — so `user/main` read `4721af6` here while the checkout's read `285ae37`, and the leg-connection map fix and U+200E strip were unreachable until a local `git fetch` between the two paths. Worth remembering: submodule commits made from the main checkout do not appear in a worktree until fetched, and a local fetch carries them without a push, so git-sync never fires.
+- Remaining UI failures are pre-existing on `main`, not from this branch: `site.yaml` pins `owner_username` to a real account while the suite authenticates as `testrunner`, so owner-only controls never render for it. Only `trip-publish.spec.js` patches that; `delete-flow`, `edit-mode` and `anon-view` do not. Separate branch.
+- ~~Every `make` target aborts with `.env:6: *** missing separator`~~ **Fixed by the user (2026-07-24)** — `make` now parses in the checkout. Worth keeping in mind: the env layering is intentional (`.env` global, `-include .env.$(ENV)` per-environment, `ENV` set by the generated env-suffixed remote targets like `make remote-install-prod`), but because `.env` is pulled in with `-include` it must be valid **makefile** syntax as well as valid dotenv — so a leading tab, a multi-line value, or a line without `=` takes down every target at once. Worktrees mask it, since `worktree-new` creates no `.env` and the include silently skips.
+- **UG1, UG2 and LD1 under `tests/ui/post/` now pass** — they had been failing only because this branch predated `e17a5dc` ("block submit on unfinished photo uploads; un-squeeze EXIF portraits in lightbox"). Merging `user/main` in brought the upload gate and the oriented-derivative slide dims those specs assert, and all three went green with no product change. A first pass mistook them for live defects; the lesson is to check the submodule branch point before reading a red spec on a feature branch as a real bug.
 
 ## Goal Capsule
 
@@ -45,7 +58,7 @@ The only way to set a coordinate today is the GPS button (reads live position) o
 - R5. Lookup is explicit-click only. While in flight, the button shows a disabled "Searching…" state that always re-enables on response, no-match, or network failure.
 - R6. Clicking with both City and Country empty is treated as a no-match: an inline hint asks for a city or country first, and no request is sent.
 - R7. Multiple matches render as a clickable list (place name, admin region, country), built via `document.createElement` + `.textContent` (no `innerHTML`), matching every other dynamic-content construction already in `post-form.js`. Clicking an entry sets `lat`/`lng` and the pin only — it never writes back to City/Country. The list hides again until the next lookup.
-- R8. No matches renders an inline hint suggesting a country or manual pin drag; a network failure degrades silently (fields untouched), consistent with the existing reverse-geocode/weather error handling in `post-form.js`.
+- R8. No matches renders an inline hint suggesting a country or manual pin drag; a network failure (or a non-2xx response) leaves the fields untouched and renders a *distinct* inline hint naming the connection as the problem. **Revised in code review 2026-07-24** from "degrades silently" — silence was indistinguishable from a broken button, and the two failure modes need different messages.
 
 **Map preview & sync**
 - R9. A single MapLibre GL map with one draggable marker (≥44×44px touch target) renders in the panel, reusing the site's existing style URL (`MAP_STYLE`, extracted to a shared `user/themes/intotheeast/js/src/map-style.js` module per KTD1). The map instance is created once, on the panel's first open, held in module scope, and reused (with an explicit `.resize()` call) on every subsequent open — the container sits under `display:none` while closed, so the first paint would otherwise get a zero-size canvas.
@@ -54,7 +67,7 @@ The only way to set a coordinate today is the GPS button (reads live position) o
 - R12. No pin is shown until one of the four paths above sets a value for the first time.
 
 **Error handling & validation boundary**
-- R13. Invalid manual `lat`/`lng` text is never client-blocked — the visual mismatch flag (R11) is the only feedback. Final enforcement stays server-side in `cleanCoordinate()`, which already throws on a non-blank, still-invalid value after cleaning.
+- R13. Invalid manual `lat`/`lng` text raises the visual mismatch flag (R11), **and** an unresolved flag blocks submit. **Revised in code review 2026-07-24** from "never client-blocked". The original wording deferred all enforcement to a server-side `cleanCoordinate()` described as already shipped — it was not committed anywhere, so no layer validated coordinates. It now ships in `cache-on-save.php` (both the `/post` form and the Admin2/API save paths) and the client gate stays, giving real defence in depth. The client parse is intentionally stricter than the server's `is_numeric` (whole-value decimals only, so `48,85` / `35.0116S` / `48abc` are rejected rather than prefix-parsed).
 - R14. Geolocation permission denial keeps its existing, unmodified `#location-status` error behavior.
 
 ### Scope Boundaries

docs/working/specs/2026-07-23-post-form-location-override-design.md

@@ -64,8 +64,8 @@ Backend sanitization has already been added (`user/plugins/cache-on-save/cache-o
 ### Error handling
 
 - No search results: inline message under the search box, map/pin untouched.
-- Search network failure: silent-ish degrade (consistent with existing weather/reverse-geocode error handling in `post-form.js`), fields untouched.
-- Invalid manual `lat`/`lng` text: no client-side hard block (the map preview and eventual server-side `cleanCoordinate()` are the safety nets); this UI's whole point is to make that failure mode rare in practice, not to duplicate the backend validator client-side.
+- Search network failure: fields untouched, and an inline hint says the lookup service could not be reached (distinct from the no-results message, which means the service answered). **Revised in code review 2026-07-24** — this originally said "silent-ish degrade", which in practice left the DOM byte-identical to the pre-click state, so a traveller on flaky mobile data could not tell a failed lookup from a broken button. A non-2xx response is also now treated as a failure rather than parsed as an empty result set.
+- Invalid manual `lat`/`lng` text: the visual mismatch flag is the primary feedback, **and** an unresolved flag blocks submit. **Revised in code review 2026-07-24** — this originally said "no client-side hard block", on the stated grounds that server-side `cleanCoordinate()` was already the safety net. It was not: `cleanCoordinate()` had never been committed, so nothing validated coordinates anywhere. It now ships (`cache-on-save.php`, both the `/post` and Admin2 paths), so the two are genuine defence in depth rather than one imaginary net. Client-side parsing is deliberately *stricter* than the server's `is_numeric` (whole-value decimals only), which is the safe direction for a mismatch.
 - Geolocation permission denied: unchanged existing behavior (`#location-status` error message).
 
 ## Out of scope / explicitly deferred