[AZ-389] C5 orthorectifier emits mid-flight tiles to C6

Adds an opt-in C5-internal orthorectifier (`_orthorectifier.py`) that
emits at most one tile-aligned JPEG candidate per nav frame to the
C6 `TileStore.write_tile` API.  Quality gates fire before any
OpenCV work: covariance Frobenius, inlier floor, source-label
(`SATELLITE_ANCHORED` only), and once-per-frame rate limit.

Cross-component import rule (AZ-507) is preserved: c5_state never
imports c6_tile_cache.  `runtime_root.state_factory` carries a new
`_C6MidFlightIngestAdapter` that builds the canonical
`TileMetadata` (`ONBOARD_INGEST` / `FRESH` / `PENDING`), hashes
the JPEG, and translates `FreshnessRejectionError` to a `None`
return so the orthorectifier silently swallows freshness
rejection per AC-NEW-3.

Wiring is opt-in via `C5StateConfig.orthorectifier.enabled`;
existing tests/binaries default to disabled and are unaffected.
Both `GtsamIsam2StateEstimator` and `EskfStateEstimator`
participate through new `attach_orthorectifier` /
`set_latest_nav_frame` extension methods (Protocol surface
unchanged).

Tests: 22 new unit tests cover AC-1..AC-9 plus inlier-floor
gate plus the composition-root adapter.  216/216 c5_state and
38/38 runtime-root + compose tests pass.

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

_docs/_autodev_state.md

@@ -6,13 +6,13 @@ step: 7
 name: Implement
 status: in_progress
 sub_step:
-  phase: 1
-  name: parse
-  detail: ""
+  phase: 11
+  name: commit
+  detail: "Batch 65 (AZ-389) committed; awaiting tracker transition + completeness gate"
 retry_count: 0
 cycle: 1
 tracker: jira
-last_completed_batch: 64
+last_completed_batch: 65
 last_cumulative_review: batches_61-63
 current_batch: 65
-current_batch_tasks: ""
+current_batch_tasks: "AZ-389"