fusion

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gsxdsm 1f23a2e622 FN-6878: register Droid provider before probes

Register Droid provider startup without waiting on local binary probes.

- Register the Droid CLI provider synchronously with an empty model list, then refresh discovered models asynchronously.
- Harden Droid runtime probes to convert spawn errors and timeouts into unavailable sentinel results.
- Add coverage for non-blocking startup, failed probes, unavailable binaries, and process cleanup behavior.
- Add a patch changeset for the published Fusion CLI package.

Files changed:
 .changeset/fn-6878-droid-boot.md                   |  5 ++
 packages/droid-cli/index.ts                        | 73 +++++++++++-------
 packages/droid-cli/src/__tests__/index.test.ts     | 52 ++++++++++++-
 .../src/__tests__/process-manager.test.ts          | 58 +++++++--------
 .../src/__tests__/discover-models.test.ts          |  8 ++
 .../src/__tests__/probe.test.ts                    | 43 ++++++++++-
 .../src/__tests__/startup-probes.test.ts           | 86 ++++++++++++++++++++++
 plugins/fusion-plugin-droid-runtime/src/probe.ts   | 32 +++++---
 8 files changed, 283 insertions(+), 74 deletions(-)

Fusion-Task-Id: FN-6878

Fusion-Task-Lineage: 4e44a6e8-0eea-4867-a172-3bdc0c6368e1

2026-06-21 16:40:32 -07:00