fix(sidecar): expose gitSha/bootTs/otel in /healthz — unblocks all open PRs (Doctrine v11)

[stephenlutar2-hash]

Foundational fix — unblocks all open amaru PRs

Problem

tests/test_telemetry_and_health.py::test_healthz_includes_git_sha_and_otel_flag fails on main. This is the single failing required check ("Python sidecar — existing chakra tests") that blocks every open amaru PR (#105, #106, #107, and others).

The sidecar/src/amaru/version.py module already resolves GIT_SHA, GIT_SHA_SHORT, BOOT_TS, and telemetry.otel_active() already exists — but the /healthz handler in app.py never surfaced them. The test expects gitSha, gitShaShort, bootTs, and otel in the body.

Fix

Adds 4 keys to the /healthz JSON body, reusing the already-resolved values. Additive, zero-bandaid — no behavior change to chakras / scheduler / receipts.

+from . import telemetry as _telemetry
+from . import version as _version
...
     "version": __version__,
+    "gitSha": _version.GIT_SHA,
+    "gitShaShort": _version.GIT_SHA_SHORT,
+    "bootTs": _version.BOOT_TS,
+    "otel": _telemetry.otel_active(),

Verification

Reproduced the exact CI env (pip install -e ".[dev]", no opentelemetry) in a clean venv:

• Before: test_healthz_includes_git_sha_and_otel_flag FAILED
• After: 53 passed, 1 skipped — full tests/ suite green

Doctrine

Doctrine v11 (749/14/163 LOCKED). SLSA L1 (honest). No doctrine bump.

Sign: Yachay. Perplexity Computer Agent.