fix(cli): register framework executor under the kind the phase enqueues

[ZhengGong-amd]

Summary

• The FRAMEWORK phase enqueues per-candidate work with kind framework_agent (matching protocol/action_surfaces.py COORDINATOR_INTERNAL_ACTIONS and actions/_meta/framework_agent.yaml), but _register_executors registered FrameworkAgentExecutor under the stale key framework.
• With no executor matching the enqueued kind, every PR candidate discovered by the framework agent was stamped no_result_failed instead of being benchmarked.
• Renames the registration key to framework_agent and tightens the wiring test to assert the new key is present and the stale framework key is gone, so the mismatch cannot silently come back.

Test plan

• pytest src/hyperloom/inference_optimizer/tests/test_cli_executors_wiring.py
• Run a session with the framework agent enabled and confirm discovered PR candidates get real benchmark results rather than no_result_failed.

Made with Cursor

[github-actions]

CI E2E report — ✅ Succeeded

item	value
result	✅ Succeeded
model	Qwen/Qwen3-0.6B (dense)
resources	1× GPU, TP=1
PR branch	fix/zgong/rename-framework
commit	1479eed856b237c09b761127c05d9abf6b4fb880
session_id	076c5029-f611-44f9-b0cd-c2d0087ef537
queue → dispatch	0s
run time	153m 33s
total	153m 33s

details