feat(container-runner): log version and git sha at actor start

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Stack for rivet-dev/actors

• #5556 fix(container-runner): read cgroup v1 memory usage under gvi …
• #5548 feat(container-runner): log version and git sha at actor sta … 👈
• #5549 feat(container-runner): setup instance memory and cpu usage …
• #5546 fix(rivetkit): keep actor event loop alive through shutdown …
• #5539 feat(container-runner): report actors as crashed on unexpect …
• #5536 feat(container-runner): log unexpected platform SIGTERM as a …
• #5530 fix(rivetkit-core): cancel driver alarm before sqlite teardo …
• #5531 feat(container-runner): keep instance warm instead of self-e …
• #5533 chore(container-runner): default stop grace to 10s
• #5528 fix(rivetkit): log and surface actor startup failures
• #5558 fix(sdks): drop rivet-util metrics dep from protocol crates …
• main

Get stack: forklift get 5548
Push local edits: forklift submit
Merge when ready: forklift merge 5548

_{change qolrvkqv}

[claude]

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