fusion

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gsxdsm b1a2aeebf2 FN-6635: expose task document tools to chat agents

Expose task document read/write tools to dashboard chat agents with explicit task targeting.

- Add chat-specific fn_task_document_write/read factories that require task_id and reuse task document read behavior.
- Wire dashboard chat custom tools to include task document tools when a scoped task store is available.
- Cover chat document tool exposure and explicit-task document operations with engine and dashboard tests.
- Document chat availability and add a published package changeset.

Files changed:
 .changeset/fn-6635-chat-task-documents.md          |   5 +
 docs/agents.md                                     |   1 +
 .../cli/skill/fusion/references/engine-tools.md    |   4 +-
 .../dashboard/src/__tests__/chat-manager.test.ts   |  78 +++++++++++
 packages/dashboard/src/chat.ts                     |  15 ++-
 .../src/__tests__/agent-document-tools.test.ts     | 108 +++++++++++++++
 packages/engine/src/agent-tools.ts                 | 145 ++++++++++++++++-----
 packages/engine/src/index.ts                       |   3 +
 8 files changed, 318 insertions(+), 41 deletions(-)

Fusion-Task-Id: FN-6635

Fusion-Task-Lineage: 25e701d4-7670-470b-9dea-df49884f7b21

2026-06-18 07:06:00 -07:00