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7 Commits

Author SHA1 Message Date
gsxdsm
2a9ae0aca3 FN-9109: add resilient cross-runtime Cursor fallback 
Route eligible CLI fallback failures into one bounded, auditable Cursor runtime handoff.

- defer cursor-cli fallback selection until a retryable primary prompt failure
- serialize concurrent swaps, retry the primary after failed handoffs, and dispose replacements safely
- transfer text-only conversation context within strict turn and total character limits
- document routing behavior and cover provider, runtime, concurrency, and failure cases

Files changed:
 .../fn-9109-cross-runtime-cursor-fallback.md       |   7 +
 AGENTS.md                                          |   2 +
 docs/cursor-cli-contract.md                        |   8 +
 .../src/__tests__/cli-provider-routing.test.ts     |  18 +-
 .../cli-runtime-routing-conformance.test.ts        |  64 ++++-
 .../src/__tests__/cross-runtime-fallback.test.ts   | 146 +++++++++++
 .../engine/src/agents/agent-session-helpers.ts     | 211 ++++++----------
 packages/engine/src/agents/cli-provider-routing.ts |   4 +-
 .../engine/src/agents/cross-runtime-fallback.ts    | 277 +++++++++++++++++++++
 packages/engine/src/util/run-audit.ts              |   8 +
 10 files changed, 602 insertions(+), 143 deletions(-)

Fusion-Task-Id: FN-9109

Fusion-Task-Lineage: 30664371-8410-4d6f-a263-cc86c8e0dc72

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
 2026-08-15 19:10:55 -07:00
gsxdsm
5e5b0dbb8f FN-9098: bridge scoped Fusion tools into Cursor 
Publish engine-owned Fusion tools to Cursor through a crash-safe, worktree-scoped MCP bridge.

- preserve operator MCP configuration with locking, journaling, quarantine, and lease reconciliation
- enforce identity-scoped fn_* provenance so injected custom and MCP tools are never exposed
- secure loopback dispatch with per-session tokens, heartbeats, cleanup, and normalized tool events
- document the Cursor contract and cover bridge lifecycle, config hygiene, and failure handling

Files changed:
 .changeset/fn-9098-cursor-mcp-bridge.md            |   7 +
 docs/cursor-cli-contract.md                        | 140 ++-------------
 docs/mcp.md                                        |   4 +
 .../src/__tests__/agent-session-helpers.test.ts    |  24 +++
 .../src/__tests__/step-session-executor.test.ts    |  16 ++
 .../src/__tests__/web-fetch-universal.test.ts      |   4 +-
 packages/engine/src/agent-heartbeat.ts             |   3 +-
 packages/engine/src/agents/agent-runtime.ts        |   9 +
 .../engine/src/agents/agent-session-helpers.ts     |  26 +--
 packages/engine/src/execution/reviewer.ts          |   1 +
 .../engine/src/execution/step-session-executor.ts  |  31 ++--
 .../engine/src/executor/execute-workflow-step.ts   |   4 +-
 packages/engine/src/merger.ts                      |   4 +-
 plugins/fusion-plugin-cursor-runtime/README.md     |  18 +-
 plugins/fusion-plugin-cursor-runtime/package.json  |   2 +-
 .../src/__tests__/cursor-mcp-config.test.ts        | 100 +++++++++++
 .../cursor-mcp-server-failure.stream.jsonl         |   3 +
 .../fixtures/cursor-mcp-tool-call.stream.jsonl     |   4 +
 .../src/__tests__/runtime-adapter.test.ts          |  57 +++++-
 .../src/__tests__/worktree-hygiene.test.ts         |  52 ++++++
 .../src/cursor-mcp-config.ts                       | 196 +++++++++++++++++++++
 .../src/mcp-schema-server.cjs                      | 155 ++++++++++++++++
 .../src/prompt-transport.ts                        |   4 +-
 .../src/runtime-adapter.ts                         |  67 +++++--
 .../src/tool-bridge.ts                             |  48 +++++
 .../src/tool-mapping.ts                            |  11 ++
 plugins/fusion-plugin-cursor-runtime/src/types.ts  |   6 +-
 .../src/worktree-hygiene.ts                        | 117 ++++++++++++
 28 files changed, 934 insertions(+), 179 deletions(-)

Fusion-Task-Id: FN-9098

Fusion-Task-Lineage: 11b6cb10-ce0e-4f33-9007-c83f2bbf82ea

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
 2026-08-15 16:51:54 -07:00
gsxdsm
b6efd89ae5 FN-9097: add Cursor CLI execution runtime 
Add a supervised Cursor CLI runtime for routed Cursor model sessions.

- Stream Cursor prompt output into Fusion session callbacks with resume support.
- Support Windows Cursor shims, inactivity-based supervision, and cursor-agent to cursor fallback execution.
- Route Cursor CLI models through the bundled plugin and document the runtime contract.

Files changed:
 .changeset/fn-9097-cursor-cli-runtime.md           |   7 ++
 docs/cursor-cli-contract.md                        |  21 ++++
 docs/settings-reference.md                         |   4 +-
 .../cli-runtime-routing-conformance.test.ts        |  11 +-
 .../engine/src/agents/agent-session-helpers.ts     |   6 +-
 packages/engine/src/agents/cli-provider-routing.ts |  27 ++---
 plugins/fusion-plugin-cursor-runtime/README.md     |  21 ++++
 plugins/fusion-plugin-cursor-runtime/package.json  |   1 +
 .../src/__tests__/cli-spawn.test.ts                |  25 ++++-
 .../src/__tests__/prompt-transport.test.ts         |  58 ++++++++++
 .../src/__tests__/runtime-adapter.test.ts          |  44 +++++---
 .../src/__tests__/stream-parser.test.ts            |  12 +++
 .../fusion-plugin-cursor-runtime/src/cli-spawn.ts  |  57 +++++++++-
 plugins/fusion-plugin-cursor-runtime/src/index.ts  |   4 +-
 .../src/prompt-transport.ts                        | 120 +++++++++++++++++++++
 .../src/runtime-adapter.ts                         |  59 ++++++----
 .../src/stream-parser.ts                           |  43 ++++++++
 plugins/fusion-plugin-cursor-runtime/src/types.ts  |  18 ++--
 pnpm-lock.yaml                                     |   3 +
 19 files changed, 458 insertions(+), 83 deletions(-)

Fusion-Task-Id: FN-9097

Fusion-Task-Lineage: a4eed861-6059-4528-9f80-3426f5ccad58

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
 2026-08-15 08:51:35 -07:00
gsxdsm
c9a2b201be FN-7698: update cursor-cli-contract.md with verified model/auth commands 
Corrects the FN-3396 preflight's assumed Cursor CLI commands with the real, verified contract captured and implemented in FN-7697.

- Documents model discovery as plain-text `cursor-agent models` (no --json flag), including output shape, empty-account state, and the unreliable --list-models alternative
- Documents the parsing strategy: extract id before first ' - ' per line, filtering header/tip/empty-state lines
- Documents authentication as derived from `cursor-agent status --format json` via `isAuthenticated`, distinct from the --version availability probe
- Updates the Windows shell-backed probe list to include the auth-status probe and the corrected model-discovery command
- Marks the FN-3396 contract-freeze section as superseded by the verified contract, retaining accurate parts (binary candidates, expected failure states, dynamic-first principle)
- Adds an update-history note and FNXC:CursorCli comment documenting the correction

Files changed:
 docs/cursor-cli-contract.md | 43 +++++++++++++++++++++++++++++--------------
 1 file changed, 29 insertions(+), 14 deletions(-)

Fusion-Task-Id: FN-7698

Fusion-Task-Lineage: ae30b81c-f750-4011-85ae-883b1c5eb48b

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
 2026-07-08 23:39:34 -07:00
gsxdsm
abb1917999 FN-7419: add Cursor CLI binary path override 
Add a global Cursor CLI binary path override that is validated before enabling or probing Cursor routing.

- Add global settings schema/types and API support for storing a trimmed Cursor CLI binary path override.
- Surface a Settings Authentication control to save, clear, and test the Cursor CLI binary path.
- Probe configured Cursor binaries before PATH fallbacks and expose diagnostics for status/routes.
- Cover settings, route, dashboard, and cursor runtime behavior with focused tests and documentation.

Files changed:
 .changeset/fn-7419-cursor-cli-binary-path.md       |   7 ++
 docs/cursor-cli-contract.md                        |  33 ++++--
 docs/settings-reference.md                         |   2 +
 .../core/src/__tests__/cursor-cli-settings.test.ts |  34 ++++++
 packages/core/src/settings-schema.ts               |   6 +
 packages/core/src/types.ts                         |   8 ++
 packages/dashboard/app/api/legacy.ts               |  17 ++-
 .../app/components/CursorCliProviderCard.css       |  37 +++++-
 .../app/components/CursorCliProviderCard.tsx       |  78 ++++++++++++-
 .../__tests__/ModelOnboardingModal.test.tsx        |   4 +
 .../__tests__/SettingsModal.general.test.tsx       |   2 +
 .../__tests__/SettingsModal.models-auth.test.tsx   |  75 ++++++++++++
 .../SettingsModal.remote-notifications.test.tsx    |   2 +
 .../SettingsModal.scheduling-merge.test.tsx        |   2 +
 .../__tests__/SettingsModal.test-harness.tsx       |   3 +
 .../dashboard/src/__tests__/routes-auth.test.ts    | 130 ++++++++++++++++++++-
 .../dashboard/src/routes/register-auth-routes.ts   |  69 +++++++++--
 .../src/__tests__/probe.test.ts                    |  61 +++++++++-
 .../src/__tests__/process-manager.test.ts          |  10 ++
 .../src/__tests__/provider.test.ts                 |  57 +++++++++
 plugins/fusion-plugin-cursor-runtime/src/probe.ts  |  39 +++++--
 .../fusion-plugin-cursor-runtime/src/provider.ts   |  15 ++-
 plugins/fusion-plugin-cursor-runtime/src/types.ts  |   3 +
 23 files changed, 655 insertions(+), 39 deletions(-)

Fusion-Task-Id: FN-7419
Fusion-Task-Lineage: 2c192a37-a1db-41a9-99f5-a480ed311d9c
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
 2026-07-02 11:38:33 -07:00
gsxdsm
777f64750c FN-7418: fix Cursor CLI Windows shim spawning 
Fix Cursor runtime probes to execute Windows cmd and bat shims reliably while preserving diagnostics.

- Run shared Cursor CLI probe and discovery spawns through the shell only on Windows.
- Surface bounded spawn error details in unavailable Cursor probe reasons.
- Cover Windows shell spawning, failure diagnostics, probe, and process-manager behavior with tests.
- Document the Windows PATH shim invocation contract and add a patch changeset.

Files changed:
 .changeset/fn-7418-cursor-cli-windows-cmd.md       |   7 ++
 docs/cursor-cli-contract.md                        |  17 ++++
 .../src/__tests__/cli-spawn.test.ts                | 103 +++++++++++++++++++++
 .../src/__tests__/probe.test.ts                    |  44 ++++++++-
 .../src/__tests__/process-manager.test.ts          |  24 ++++-
 .../fusion-plugin-cursor-runtime/src/cli-spawn.ts  |  41 ++++++--
 plugins/fusion-plugin-cursor-runtime/src/probe.ts  |  14 ++-
 7 files changed, 236 insertions(+), 14 deletions(-)

Fusion-Task-Id: FN-7418
Fusion-Task-Lineage: d689bea7-4676-4190-a60a-f85efab90aba
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
 2026-07-02 11:38:31 -07:00
Fusion
3735e0565a feat(FN-3396): bundle Cursor CLI as a plugin provider with dashboard auth w 
Merges FN-3396's full Cursor CLI provider integration (Steps 1–4): defines a CLI-backed provider contract, adds the `fusion-plugin-cursor-runtime` plugin package with process management and runtime probes, wires dashboard auth flows and UI (ProviderCard, onboarding modal, settings), and bundles the

Fusion-Task-Id: FN-3396
 2026-05-07 04:17:52 -07:00