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gsxdsm 2335a07620 FN-7291: add Claude Sonnet 5 Anthropic support

Adds Claude Sonnet 5 to Anthropic model catalogs, pricing, and pi execution paths.

- Register supplemental direct Anthropic model metadata for Claude Sonnet 5 with deduping.
- Surface the model through dashboard model routes and engine session creation for non-Claude-CLI pi sessions.
- Add Claude CLI provider metadata, pricing coverage, tests, and a published package changeset.

Files changed:
 .changeset/fn-7291-sonnet-5-anthropic.md           |   7 ++
 packages/core/src/__tests__/model-pricing.test.ts  |  28 +++++
 packages/core/src/anthropic-models.ts              | 127 +++++++++++++++++++++
 packages/core/src/index.ts                         |   7 ++
 packages/core/src/model-pricing.ts                 |  13 ++-
 .../dashboard/src/__tests__/routes-auth.test.ts    |  67 +++++++++++
 packages/dashboard/src/routes.ts                   |   6 +-
 .../dashboard/src/routes/register-model-routes.ts  |   5 +-
 .../src/__tests__/pi-create-fn-agent.test.ts       |  67 +++++++++++
 .../src/cli-agent/adapters/__tests__/pi.test.ts    |  16 +++
 packages/engine/src/pi.ts                          |   2 +
 packages/pi-claude-cli/index.ts                    |  13 +++
 .../src/__tests__/process-manager.test.ts          |   4 +-
 .../pi-claude-cli/src/__tests__/provider.test.ts   |  31 ++++-
 14 files changed, 384 insertions(+), 9 deletions(-)

Fusion-Task-Id: FN-7291

Fusion-Task-Lineage: 6494fce8-4101-47f5-9137-306408fd7920

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

2026-06-30 13:20:27 -07:00