[AZ-505] Tile inventory endpoint + HTTP/2 + Leaflet covering index

Production code:
- POST /api/satellite/tiles/inventory (XOR body, 5000-cap,
  most-recent-per-location_hash select, present/absent shaping).
- Kestrel HttpProtocols.Http1AndHttp2 on every listener (AC-5).
- Migration 015 creates tiles_leaflet_path covering index over
  (location_hash, captured_at DESC, updated_at DESC, id DESC)
  INCLUDE (file_path, source); drops superseded idx_tiles_location_hash.
- TileRepository.GetByTileCoordinatesAsync rewired to filter by
  location_hash (Index Only Scan via tiles_leaflet_path).
- TileRepository.GetTilesByLocationHashesAsync added with Npgsql-
  direct ANY($1::uuid[]) binding (Dapper IEnumerable expansion is
  incompatible with the array form).
- Uuidv5.LocationHashForTile centralises the UUIDv5(TileNamespace,
  "{z}/{x}/{y}") formula — single source of truth for the cross-repo
  invariant (gps-denied-onboard parity).

Contracts:
- New: contracts/api/tile-inventory.md v1.0.0.
- Bumped: contracts/data-access/tile-storage.md to v2.0.0 (joint
  ownership by AZ-503-foundation + AZ-505: schema + covering index +
  GetByTileCoordinatesAsync rewrite).

Tests:
- TileInventoryTests covers AC-1, AC-2 (DB-level), AC-4, AC-6.
- Http2MultiplexingTests covers AC-5 (20 concurrent multiplexed GETs
  over h2c via SocketsHttpHandler + AppContext Http2Unencrypted switch).
- LeafletPathIndexOnlyTests covers AC-3 (EXPLAIN (ANALYZE, BUFFERS)
  asserts Index Only Scan over tiles_leaflet_path with heap_blocks=0).

Docs:
- architecture.md, system-flows.md, data_model.md, module-layout.md,
  glossary.md, modules/api_program.md, modules/dataaccess_tile_repository.md,
  components/02_data_access/description.md all updated to reference the
  v2.0.0 tile-storage contract + new tile-inventory contract + AC-7.

Reports:
- batch_01_cycle6_report.md, batch_01_cycle6_review.md,
  implementation_completeness_cycle6_report.md (PASS),
  implementation_report_tile_inventory_cycle6.md.

Task spec moved todo/ -> done/.

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

SatelliteProvider.IntegrationTests/Program.cs

@@ -103,14 +103,15 @@ class Program
 
             await JwtIntegrationTests.RunAll(apiUrl, jwtSecret);
             await UavUploadTests.RunAll(apiUrl, jwtSecret);
+            await Http2MultiplexingTests.RunAll(apiUrl, jwtSecret);
 
             if (TestRunMode.Smoke)
             {
-                await RunSmokeSuite(httpClient);
+                await RunSmokeSuite(httpClient, connectionString);
             }
             else
             {
-                await RunFullSuite(httpClient);
+                await RunFullSuite(httpClient, connectionString);
             }
 
             Console.WriteLine();
@@ -128,7 +129,7 @@ class Program
         }
     }
 
-    static async Task RunSmokeSuite(HttpClient httpClient)
+    static async Task RunSmokeSuite(HttpClient httpClient, string connectionString)
     {
         await TileTests.RunGetTileByLatLonTest(httpClient);
         await RegionTests.RunRegionProcessingTest_200m_Zoom18(httpClient);
@@ -137,10 +138,12 @@ class Program
         await SecurityTests.RunAll(httpClient);
         await StubAndErrorContractTests.RunAll(httpClient);
         await IdempotentPostTests.RunAll(httpClient);
+        await TileInventoryTests.RunAll(httpClient);
+        await LeafletPathIndexOnlyTests.RunAll(connectionString);
         await MigrationTests.RunAll();
     }
 
-    static async Task RunFullSuite(HttpClient httpClient)
+    static async Task RunFullSuite(HttpClient httpClient, string connectionString)
     {
         await TileTests.RunGetTileByLatLonTest(httpClient);
 
@@ -158,6 +161,8 @@ class Program
         await SecurityTests.RunAll(httpClient);
         await StubAndErrorContractTests.RunAll(httpClient);
         await IdempotentPostTests.RunAll(httpClient);
+        await TileInventoryTests.RunAll(httpClient);
+        await LeafletPathIndexOnlyTests.RunAll(connectionString);
         await MigrationTests.RunAll();
     }