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Kyle Carberry
53a6459ecd
Adds chat_context_resources: a per-chat pinned copy of the agent context resources a chat is hydrated against. The agent-side table (workspace_agent_context_resources) is last-writer-wins with no history, so a chat copies its resources at hydration/refresh to keep a stable view while the agent drifts. Schema foundation only (no queries/dbauthz/prepareGeneration/SDK yet). chat_id FK ON DELETE CASCADE for cleanup parity; no agent FK so the pin survives agent replacement; PK (chat_id, source); reuses the 000522 enum types.
31 lines
2.5 KiB
SQL
31 lines
2.5 KiB
SQL
-- Creates chat_context_resources: a per-chat pinned copy of
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-- workspace_agent_context_resources (semantics in COMMENT ON TABLE
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-- below). Migration-specific notes: there is deliberately no FK to
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-- workspace_agents so the pin survives agent replacement and workspace
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-- rebuilds, and the body_kind/status enum types are reused from 000522
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-- and must not be recreated here.
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CREATE TABLE chat_context_resources (
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chat_id UUID NOT NULL REFERENCES chats(id) ON DELETE CASCADE,
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source TEXT NOT NULL,
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body_kind workspace_agent_context_body_kind NOT NULL,
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body JSONB NOT NULL,
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content_hash BYTEA NOT NULL,
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size_bytes BIGINT NOT NULL,
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status workspace_agent_context_resource_status NOT NULL,
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error TEXT NOT NULL DEFAULT '',
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source_path TEXT NOT NULL DEFAULT '',
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created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
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PRIMARY KEY (chat_id, source)
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);
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COMMENT ON TABLE chat_context_resources IS 'Per-chat pinned copy of the agent context resources a chat is hydrated against. Copied from workspace_agent_context_resources at chat hydration and context refresh; survives agent replacement and workspace rebuilds.';
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COMMENT ON COLUMN chat_context_resources.source IS 'Resource locator: canonical file path for file-backed kinds, or the MCP server name for mcp_server resources.';
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COMMENT ON COLUMN chat_context_resources.body_kind IS 'Discriminator for the body JSON shape. Matches the proto oneof variant: instruction_file, skill, mcp_config, mcp_server. PLUGIN/HOOK/SUBAGENT/COMMAND are reserved for the Claude Code plugin RFC.';
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COMMENT ON COLUMN chat_context_resources.body IS 'protojson-encoded variant body matching body_kind. Always populated; non-OK statuses use the variant zero value so the wire kind is still attributable.';
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COMMENT ON COLUMN chat_context_resources.content_hash IS 'sha256 over the resource''s original bytes (or transport-encoded server tool list).';
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COMMENT ON COLUMN chat_context_resources.size_bytes IS 'Original payload size in bytes; populated regardless of status.';
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COMMENT ON COLUMN chat_context_resources.status IS 'Per-resource status. ok carries a populated body; oversize, unreadable, invalid, and excluded carry an empty body plus an error string.';
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COMMENT ON COLUMN chat_context_resources.error IS 'Per-resource error or warning string. Populated whenever status is non-ok; may also carry a non-fatal warning when status is ok.';
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COMMENT ON COLUMN chat_context_resources.source_path IS 'User-declared scan root that produced this resource. Empty for built-in scan roots.';
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