Surface lease_proof_source / recovery reason from sanctioned session
provenance on gitea_merge_pr results, and block final reports that claim
manual/seeded/injected lease proof without MCP adoption evidence.
Closes#535
The second direct call after _verify_role_mutation_workspace caused
_clear_preflight_capability_state() to run twice (or between checks),
clearing valid capability/preflight state. This forced temp local
patches during #542/#517 merge/reconcile.
- Remove the redundant verify call (the _verify already performs
purity verification with correct worktree_path).
- Update test to reflect single invocation path and add explicit
test proving state preservation, single call, no dupe clear,
and no need for raw/temp fallbacks.
- Reconciler/controller flows stay fully MCP-native.
Fixes#548
Replace manual in-process _SESSION_LEASE seeding with an auditable
gitea_adopt_merger_pr_lease tool that posts durable adoption proof and
records sanctioned session provenance. Mutation gates now reject bare
record_session_lease calls without provenance from acquire/adopt/heartbeat.
Closes#536
sysadmin