feat(engine): declare per-harness content-block support and reject unsupported input - #515

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Zerlight wants to merge 10 commits into

ruocheng/code-636from

ruocheng/code-625

Commits on Sep 14, 2026

feat(schema): declare optional attachment capabilities and typed refusal
Zerlight
committed
f3a83d6
feat(agent-adapter): declare per-harness attachment support and refuse undeclared blocks
Zerlight
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676711f
feat(engine): admit attachment refs against harness capability
Zerlight
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3f9f4fd
feat(engine): materialize prompt attachments for adapters
Zerlight
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d66cd64
feat(engine): persist admitted refs and project them without bytes
Zerlight
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2e0f458
fix(engine): refuse unsupported resource_link before persist
Zerlight
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17852b8
fix(schema): keep the attachment representation list open on the wire
Zerlight
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9156378
fix(engine): charge every attachment ref occurrence against the prompt caps
Zerlight
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5f68510
fix(engine): materialize a repeated ref once and log cleanup failures
Zerlight
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0aa65de
fix(engine): project the attachment kind off the resource_link title
Zerlight
committed
eac7fab