* Run reviewer eval in a GitHub Action; make dashboard a read-only progress view
The dashboard launched the eval as a subprocess inside the serving deployment
worker, so a container recycle killed long runs and discarded results that had
already completed server-side. Move the harness to a workflow_dispatch Action
(run on prod). run_eval now publishes status/progress/log-tail to the LangGraph
store record the dashboard reads, so /admin/evals stays a live view; a killed
Action surfaces as failed via the stale-heartbeat reconcile.
* reviewer_eval workflow: pass inputs via env, no shell interpolation
Addresses the reviewer finding: workflow_dispatch string inputs were
interpolated into the run: block (limit unquoted), allowing shell injection in
a job holding LANGSMITH/ANTHROPIC keys. Pass inputs through env and reference
quoted "$VARS"; validate limit is numeric and build its flag in bash.
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Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>