test(calibrate-serve): HTTP integration tests for the room/enroll endpoints

Factor the router into build_router() (shared by execute + tests) and add
tower-oneshot integration tests (no network/ingest needed):
- health + descriptor → 200
- POST /room/train persists the bank; GET /room/state → 200; train with no
  anchors/enrollment → 400
- path-traversal: /room/state?bank=../../etc/passwd → 404 (sanitized, never
  reads outside output_dir)
- enroll/status empty; /enroll/anchor with an unknown label → 400

CI regression coverage for the endpoints added this session. 18 CLI tests pass.

Co-Authored-By: claude-flow <ruv@ruv.net>

v2/Cargo.lock

@@ -10847,6 +10847,7 @@ dependencies = [
  "tempfile",
  "thiserror 2.0.18",
  "tokio",
+ "tower 0.4.13",
  "tower-http",
  "tracing",
  "tracing-subscriber",
@@ -10911,10 +10912,10 @@ dependencies = [
  "criterion",
  "wifi-densepose-bfld",
  "wifi-densepose-core",
- "wifi-densepose-geo 0.1.0",
+ "wifi-densepose-geo",
  "wifi-densepose-ruvector",
  "wifi-densepose-signal",
- "wifi-densepose-worldgraph 0.3.0",
+ "wifi-densepose-worldgraph",
 ]
 
 [[package]]
@@ -10929,20 +10930,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "wifi-densepose-geo"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "092ea59d81e7be76d6d9c2d81628c1dbe768fd77591f0e82dd3c80e2963ff04a"
-dependencies = [
- "anyhow",
- "chrono",
- "reqwest 0.12.28",
- "serde",
- "serde_json",
- "tokio",
-]
-
 [[package]]
 name = "wifi-densepose-hardware"
 version = "0.3.0"
@@ -11204,37 +11191,24 @@ dependencies = [
 
 [[package]]
 name = "wifi-densepose-worldgraph"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "petgraph",
  "serde",
  "serde_json",
  "thiserror 2.0.18",
- "wifi-densepose-geo 0.1.0",
-]
-
-[[package]]
-name = "wifi-densepose-worldgraph"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13ad8df7b323061ed7afae1917dac7eedfbd24a463a668a55a16cde79df067e2"
-dependencies = [
- "petgraph",
- "serde",
- "serde_json",
- "thiserror 2.0.18",
- "wifi-densepose-geo 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wifi-densepose-geo",
 ]
 
 [[package]]
 name = "wifi-densepose-worldmodel"
-version = "0.3.0"
+version = "0.3.1"
 dependencies = [
  "serde",
  "serde_json",
  "thiserror 2.0.18",
  "tokio",
- "wifi-densepose-worldgraph 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wifi-densepose-worldgraph",
 ]
 
 [[package]]