[AZ-270] [AZ-272] [AZ-279] [AZ-281] [AZ-283] Compose root + FDR schema + 3 Layer-1 helpers

AZ-270: composition root with strategy registry, tier-gated lookup,
topo-order construction, all-or-nothing teardown, StrategyNotLinkedError
payload.
AZ-272: orjson-backed FdrRecord serialise/parse with forward-compat for
unknown payload + top-level fields and canonical overrun-record shape.
AZ-279: pyproj-backed WGS84/ECEF/ENU + OSM slippy-map tile math with
WgsConversionError for shape/range/zoom guards.
AZ-281: strict EngineFilenameSchema build/parse/matches_host with
anchored regex + enum validation; round-trip identity by construction.
AZ-283: dtype-preserving (fp16/fp32) single + batch L2 normaliser with
zero-norm safety and descriptor_metric() source-of-truth.
pyproject.toml pins pyproj>=3.6 and orjson>=3.9 (named-backend deps per
the AZ-272 / AZ-279 contracts). New DTOs LatLonAlt + BoundingBox and
EngineCacheKey + HostCapabilities land in _types/ to back the helper
contracts.
203 unit tests pass (64 new). Review verdict: PASS_WITH_WARNINGS;
findings are perf-NFR deferrals + dep amendment + minor docstring polish.

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

tests/unit/test_runtime_root_env_gate.py

@@ -1,7 +1,13 @@
-"""Runtime-root env-var fail-fast — AZ-263 AC-8."""
+"""Runtime-root env-var fail-fast — AZ-263 AC-8 (updated by AZ-270 to pass a Config).
+
+AZ-270 swapped ``compose_root()`` to ``compose_root(config: Config)``; the
+env-var fail-fast still happens inside ``compose_root`` before any factory
+construction, so this AC-8 contract is intact.
+"""
 
 import pytest
 
+from gps_denied_onboard.config import Config
 from gps_denied_onboard.runtime_root import ConfigurationError, compose_root
 
 
@@ -23,7 +29,7 @@ def test_compose_root_fails_fast_on_missing_required(monkeypatch: pytest.MonkeyP
 
     # Act / Assert
     with pytest.raises(ConfigurationError) as excinfo:
-        compose_root()
+        compose_root(Config())
     assert "Missing required environment variable" in str(excinfo.value)
 
 
@@ -45,7 +51,7 @@ def test_compose_root_names_the_first_missing_var(monkeypatch: pytest.MonkeyPatc
 
     # Act
     with pytest.raises(ConfigurationError) as excinfo:
-        compose_root()
+        compose_root(Config())
 
     # Assert
     msg = str(excinfo.value)