[AZ-960] render-map: dispatch --truth loader on extension (CSV+tlog)

load_ground_truth_track now dispatches on truth_path.suffix:
- .csv → load_csv_ground_truth (AZ-894)
- else (.tlog, .bin, no ext) → load_tlog_ground_truth (AZ-697)

Removes the AZ-959 short-circuit in SubprocessReplayRunner.
_maybe_render_map so CSV-path replay jobs ship with the same
map.html artefact as tlog jobs. Both ground-truth DTOs expose
row-aligned (lat_deg, lon_deg) records so the renderer needs no
other changes.

Touches:
- src/gps_denied_onboard/cli/render_map.py: dispatch +
  source-agnostic tooltip + --truth CLI help expanded
- src/gps_denied_onboard/replay_api/app.py: workaround removed,
  truth_path resolution picks whichever input was uploaded

Tests: 44/44 green across test_az700_render_map.py +
test_az701_replay_api.py:
- 17 pre-existing render-map tests pass unchanged (AC-2)
- New test_load_ground_truth_track_dispatches_to_csv_loader (AC-1)
- New test_load_ground_truth_track_csv_propagates_schema_error
  (AC-4: malformed CSV raises ReplayInputAdapterError)
- New test_cli_renders_map_with_csv_truth (AC-1 end-to-end)
- AZ-959 test_post_replay_csv_path_returns_200... extended to
  assert map_html_url is now present (AC-3)

Bookkeeping: AZ-960 spec moved todo/ → done/, dep-table preamble
seventh bump documents the landing + AC coverage, state.md records
batch 6 complete with AZ-961 as next.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/unit/replay_api/test_az701_replay_api.py

@@ -709,6 +709,12 @@ def test_post_replay_csv_path_returns_200_and_dispatches_imu_flag(
     body = response.json()
     assert body["state"] == JobState.DONE.value
     assert body["sync"] is True
+    # AZ-960 AC-3: CSV-path jobs now expose a map_html_url
+    # (the fake runner writes a map.html fixture that the registry
+    # links into the snapshot).
+    assert body.get("map_html_url", "").endswith("/map"), (
+        f"expected map_html_url to point at /map; got body={body}"
+    )
     # Runner saw the csv_path branch (tlog_path is None for csv jobs)
     assert len(fake_runner.calls) == 1
     inputs = fake_runner.calls[0]