refactor: rimuove feature Auto-Calibrazione (tab + endpoint + job runner)

Elimina il flusso di acquisizione griglia automatica: tab GUI, modulo
autocal3d.js, AutoRunner/auto_job, e gli endpoint /auto/* + /auto_grid.
La calibrazione resta operabile via sample manuali + /solve.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -18,7 +18,7 @@ uv run uvicorn presa_mano.main:app --host 0.0.0.0 --port 8890 --reload
 Useful endpoints (all under `http://localhost:8890`):
 - `GET /apidocs` — Swagger UI; `GET /redoc` — ReDoc.
 - `GET/PUT /api/config` — read/patch runtime config (deep-merged into `config.yaml` and persisted).
-- Calibration: `POST /api/calibration/sample`, `GET/DELETE /api/calibration/samples`, `POST /api/calibration/solve`, `GET /api/calibration/result`, `POST /api/calibration/preview`, `POST /api/calibration/auto_grid`.
+- Calibration: `POST /api/calibration/sample`, `GET/DELETE /api/calibration/samples`, `POST /api/calibration/solve`, `GET /api/calibration/result`, `POST /api/calibration/preview`.
 - Perception: `POST /api/perception/detect`, `POST /api/perception/object_points`, `GET /api/perception/measure`.
 - Grasp: `POST /api/grasp/plan`, `POST /api/grasp/execute` (set `dry_run` to gate G1 mutations).
 - Wrist/EE: `GET /api/wrist`, `POST /api/wrist/{absolute,relative,hand,emergency_stop,unlock}`.
@@ -84,7 +84,7 @@ Marker-finder caveat: it uses **D435i intrinsics baked into its config** that do
 
 ### Conventions to preserve
 
-- **Dry-run semantics:** any G1-mutating endpoint takes a `dry_run` flag; `G1Client._post` short-circuits and logs `[DRY-RUN]` instead of hitting the network. `auto_grid` keeps `dry_run=True` by default (the G1 DDS has been unstable). Never silently strip dry-run from a mutating path.
+- **Dry-run semantics:** any G1-mutating endpoint takes a `dry_run` flag; `G1Client._post` short-circuits and logs `[DRY-RUN]` instead of hitting the network. Never silently strip dry-run from a mutating path.
 - **Per-request client construction** (via `api/_deps.py`) is intentional — runtime `PUT /api/config` updates would otherwise be invisible.
 - Endpoints return `{ ..., "timings_ms": {step: ms, ..., total: ms} }`. New endpoints should follow this with `Stopwatch().step(name)`.
 - Calibration paths in config (`calibration.file`, `calibration.samples_file`) are resolved against `PRESA_MANO_DATA` when relative — see `_deps.calibration_file_path()` / `samples_file_path()`.