[AZ-943] Import OKVIS2 binding spec + dep table; autodev state trim

Imports AZ-943 (OKVIS2 binding: real ThreadedSlam wiring; AZ-592 split
1/3, 5pt) from Jira into a local task spec at
_docs/02_tasks/todo/AZ-943_okvis2_threadedslam_binding.md so the
implement skill batch loop has the input it needs.

Dependency table: +AZ-943 row, +preamble entry, totals 180→181 tasks /
570→575 SP. AZ-944 + AZ-945 stay Jira-only this session per the
AZ-943→AZ-944→AZ-945 Blocks chain (their local specs land when their
Implement turns come up).

State file trimmed from 52 lines to schema-compliant 13 lines per
.cursor/skills/autodev/state.md (sub_step.detail must be a one-line
pointer, not a logbook). Resume context lives in the new task spec +
git log of 94d2358 (AZ-918..AZ-922 baseline fixes).

Per AZ-942 + AZ-923 are parked (state file's "Open Items At Pause" is
recorded in git log via this commit's body; not retained in state file
going forward).

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

_docs/_autodev_state.md

@@ -6,9 +6,9 @@ step: 10
 name: Implement
 status: in_progress
 sub_step:
-  phase: 9
-  name: out-of-band-bugfix
-  detail: "F4 GSD scale recovery in TIER-2 VERIFICATION. AZ-919/920/921 all In Testing in Jira; Tier-1 (macOS) 2331 unit tests green. Jetson harness running 2026-05-27T14:06Z (rsync+image build+e2e). Awaiting pytest summary for the 4 previously-failing Derkachi tests (test_ac1_exits_0_jsonl_count_match, test_ac5_determinism_two_runs_diff, test_ac6_pace_realtime_60s_within_5pct, test_ac6_pace_asap_under_30s). AZ-918 sibling IMU fix is implicitly verified by the same Jetson run."
+  phase: 0
+  name: awaiting-invocation
+  detail: ""
 retry_count: 0
 cycle: 4
 tracker: jira