fix(mobile): discover owned agents without runtime advertisements - #7395

Summary

• Discover owner-signed kind:30177 coordinates, then verify the latest signed agent profile and exact current owner policy. No runtime advertisement or shared channel is needed for owned candidates.
• Reuse the fresh authorization reader; seed records are not authority. Bound pagination and reject stalled pages.
• Refresh suggestions on profile, runtime, policy, membership and subscription recovery events. Keep verified owner provenance on picker candidates.

Stack / rollout

Base: #7393 (fix/mobile-authorization-20260905). 311 added + deleted lines, including tests. Closest related: #7393/#7394.
Do not enable widened discovery until publication #7394 and explicit invitations #7390 are integrated. This is a rollout gate, not a code dependency. All PRs remain draft.

Validation

• Full just mobile-check and just mobile-test pass on the source committed as 5dcc5dea (2,099 tests).
• Tests cover no-runtime/no-channel discovery into picker, latest revoked proof, nobody policy, live changes and recovered subscriptions, equal-time pagination and stalled cursors.
• Repository-wide just ci ended RESULT:1: 913/915 ACP tests passed; unchanged keepalive_resets_idle_past_deadline and idle_resets_on_stdout_activity failed. The later ACP unit lane passed, but this is not a full-local-CI pass. GitHub Mobile passes at 5dcc5dea.
• No Xcode/simctl available; no native simulator claim.

Desktop reference: desktop/src-tauri/src/commands/agent_discovery/relay_directory.rs (owner-coordinate seed + authenticated exact-policy resolution).
Originating Buzz channel: f6cfbbe2-3f94-4b41-9105-e6dcc5459813; request 9c1c48d4b47b390d88434d623d08c697275e7af9c20884715f44bf42b45c0edf.

Composed-stack evidence / landing note

Current review head: 5dcc5deaf80626aea9f2ff62141792eaa91ec3bb; incremental size: 311 added + deleted lines.

All 11 draft slices are composed on verify/mobile-combined-20260905 at 40630565: just mobile-check and the full just mobile-test pass (2,144 tests). This is integration evidence, not a twelfth review PR or native-device acceptance.

Independent branches overlap, especially in the composer. Use that commit as the conflict-resolution reference when rebasing for landing; do not blindly choose one branch’s send function. Preserve exact/durable bindings, explicit Invite/reference-only intent, visit/account/community/revision fences, and authorization before membership preparation and before publication. Widened discovery must not roll out before #7390 + #7394 are integrated. Code dependency is only the declared PR base; overlapping files and rollout order are not extra dependency edges.

All PRs remain draft; no merge requested. Security/human review is not complete. Originating Buzz channel: f6cfbbe2-3f94-4b41-9105-e6dcc5459813.