Rename PyPI distribution to agentops-accelerator

Atomic two-line change coupling pyproject.toml [project].name with the
importlib.metadata.version() lookup that reads it. Decoupling these would
silently fall back to __version__ = '0.0.0-dev' (PackageNotFoundError ->
fallback in src/agentops/__init__.py lines 5-8).

Commit 1 of PR-2 in the 3-PR rebrand strategy for #181. Target release:
v0.3.0 (minor bump signals user-visible migration). Subsequent commits in
this PR will sweep install hints, workflows, scripts, plugin manifests,
templates, README (PyPI long description), CHANGELOG, and targeted tests.
PR-3 will publish tombstone packages pinning agentops-accelerator>=0.3.0.

Note for existing developers: after pulling, run
  rm -rf src/agentops_toolkit.egg-info && uv pip install -e .
to refresh editable-install metadata. CI is unaffected (fresh installs).

Refs #181.

Author: DB Lee

pyproject.toml

@@ -3,7 +3,7 @@ requires = ["setuptools>=68", "wheel", "setuptools-scm>=8"]
 build-backend = "setuptools.build_meta"
 
 [project]
-name = "agentops-toolkit"
+name = "agentops-accelerator"
 dynamic = ["version"]
 description = "Release readiness gates and evidence for Microsoft Foundry agents"
 readme = "README.md"

src/agentops/__init__.py

@@ -3,7 +3,7 @@
 from importlib.metadata import PackageNotFoundError, version
 
 try:
-    __version__ = version("agentops-toolkit")
+    __version__ = version("agentops-accelerator")
 except PackageNotFoundError:
     __version__ = "0.0.0-dev"