Re-design replay mode per user direction: replay is no longer a fourth
Docker image with a reduced component set, but a `config.mode = "replay"`
branch of the single airborne binary. The pre-flight workflow (route in
suite UI -> C12 tile download via real satellite-provider -> C10
manifest+engines build) is identical between live and replay; only three
strategies swap at compose time:
FrameSource: Live <-> Video
FcAdapter: Pymavlink/MSP2 <-> TlogReplay
MavlinkTransport: Serial <-> Noop
The C8 outbound MAVLink encoders run unchanged in both modes; their
bytes hit `NoopMavlinkTransport` in replay and disappear. A new
`JsonlReplaySink` taps C5's `EstimatorOutput` stream so the parent-suite
UI sees per-tick coordinates by tailing `results.jsonl`. MAVLink 2.0
signing key remains mandatory (operator supplies a dummy file).
A new `replay_input/` Layer-4 cross-cutting coordinator owns
`(video, tlog) -> (FrameSource, FcAdapter, Clock)` convergence; the
composition root sees only standard interfaces past `.open()`.
Docs:
- architecture.md: new ADR-011 with full rationale; ADR-002 binary
narrative updated.
- contracts/replay/replay_protocol.md: bumped to v2.0.0; 12 invariants
(notably mode-agnosticism + encoder byte-equality + signing key
mandatory + real C6 cache in replay).
- module-layout.md: Build-Time Exclusion Map dropped from 4 to 3 binary
columns; replay-mode `BUILD_*` flags default ON in airborne;
`shared/replay_input` cross-cutting entry added.
- epics.md: E-DEMO-REPLAY scope reframed; story points 27-32 -> 19-24.
Task respecs:
- AZ-401: shrunk 3 -> 2 pts; `compose_root` mode branch + JSONL sink +
NoopMavlinkTransport wiring; legacy `compose_replay` export deleted.
- AZ-402: console-script wrapper that mutates `config.mode = "replay"`
and dispatches into the shared airborne main; `--mavlink-signing-key`
mandatory.
- AZ-403: CANCELLED. Moved to done/ with banner; Jira transition deferred
via `_docs/_process_leftovers/2026-05-14_az_403_cancellation_pending_tracker.md`.
- AZ-404: AC-4 reworded as mode-agnosticism AST scan + encoder
byte-equality test; new AC-8 operator-workflow rehearsal.
- AZ-405: also owns the `replay_input/` module + `ReplayInputAdapter`.
_dependencies_table.md updated: AZ-401 gains AZ-405 dep; AZ-404 drops
AZ-403 dep; AZ-403 row marked CANCELLED.
Co-authored-by: Cursor <cursoragent@cursor.com>
Closes out greenfield Step 6 (Decompose) for all 14 components
(C1-C13 + cross-cutting helpers/replay). Covers tasks AZ-266..AZ-446
plus the _dependencies_table.md and component contract documents.
State file updated to greenfield Step 7 (Implement), not_started.
Co-authored-by: Cursor <cursoragent@cursor.com>
Oleksandr Bezdieniezhnykh