feat: accept Glas execution overrides

README.md

@@ -41,6 +41,13 @@ rein-aharness profiles
 # Run exactly one task (local JSON task-file path — dev)
 rein-aharness run --task-file examples/task-hello-sandbox.json [--no-hub] [--no-metrics]
 
+# Execution-profile overrides supplied by glas-harness
+rein-aharness run --task-file examples/task-hello-sandbox.json \
+  --model claude-sonnet-4-6 \
+  --tool-profile green-commit-only \
+  --budget-tokens 60000 \
+  --no-hub --no-metrics
+
 # Primary production intake: activity-core ops_run claim (ACT-ADR-005 / REIN-A-0002)
 export ACTIVITY_CORE_URL=http://127.0.0.1:8010
 export ACTIVITY_CORE_WORKER_TOKEN=…
@@ -78,6 +85,10 @@ repo's instance manifest (default `green-commit-only`), loads a persona
 bundle (`kaizen-agentic schedule prepare`), runs a bounded agentic
 session (cwd-pinned, hard allow-list, never pushes), verifies a local
 commit, writes `.kaizen/metrics`, and posts a State Hub progress event.
+When invoked through `glas-harness`, the explicit versioned Glas profile may
+override model, tool profile, and budget for that bounded run. Workforce and
+activity consumers should reference the Glas profile rather than encode these
+rein CLI details in an assignment.
 
 Instance manifest contract: [docs/instance-manifest.md](docs/instance-manifest.md).
 Example: [examples/schedule.harness.yml](examples/schedule.harness.yml).