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feat: add file/image attachment support to chat input (#22604)

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This change adds support for image attachments to chat via add button
and clipboard paste. Files are stored in a new `chat_files` table and
referenced by ID in message content. File data is resolved from storage
at LLM dispatch time, keeping the message content column small.

Upload validates MIME types via content type or content sniffing against
an allowlist (png, jpeg, gif, webp). The retrieval endpoint serves files
with immutable caching headers. On the frontend, uploads start eagerly
on attach with a background fetch to pre-warm the browser HTTP cache so
the timeline renders instantly after send.
This commit is contained in:
Mathias Fredriksson
2026-03-06 21:05:26 +02:00
committed by GitHub
parent 30a736c49e
commit a104d608a3
46 changed files with 3090 additions and 163 deletions
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coderd/database/foreign_key_constraint.go
+2
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@@ -9,6 +9,8 @@ const (
ForeignKeyAibridgeInterceptionsInitiatorID ForeignKeyConstraint = "aibridge_interceptions_initiator_id_fkey" // ALTER TABLE ONLY aibridge_interceptions ADD CONSTRAINT aibridge_interceptions_initiator_id_fkey FOREIGN KEY (initiator_id) REFERENCES users(id);
ForeignKeyAPIKeysUserIDUUID ForeignKeyConstraint = "api_keys_user_id_uuid_fkey" // ALTER TABLE ONLY api_keys ADD CONSTRAINT api_keys_user_id_uuid_fkey FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE;
ForeignKeyChatDiffStatusesChatID ForeignKeyConstraint = "chat_diff_statuses_chat_id_fkey" // ALTER TABLE ONLY chat_diff_statuses ADD CONSTRAINT chat_diff_statuses_chat_id_fkey FOREIGN KEY (chat_id) REFERENCES chats(id) ON DELETE CASCADE;
ForeignKeyChatFilesOrganizationID ForeignKeyConstraint = "chat_files_organization_id_fkey" // ALTER TABLE ONLY chat_files ADD CONSTRAINT chat_files_organization_id_fkey FOREIGN KEY (organization_id) REFERENCES organizations(id) ON DELETE CASCADE;
ForeignKeyChatFilesOwnerID ForeignKeyConstraint = "chat_files_owner_id_fkey" // ALTER TABLE ONLY chat_files ADD CONSTRAINT chat_files_owner_id_fkey FOREIGN KEY (owner_id) REFERENCES users(id) ON DELETE CASCADE;
ForeignKeyChatMessagesChatID ForeignKeyConstraint = "chat_messages_chat_id_fkey" // ALTER TABLE ONLY chat_messages ADD CONSTRAINT chat_messages_chat_id_fkey FOREIGN KEY (chat_id) REFERENCES chats(id) ON DELETE CASCADE;
ForeignKeyChatMessagesModelConfigID ForeignKeyConstraint = "chat_messages_model_config_id_fkey" // ALTER TABLE ONLY chat_messages ADD CONSTRAINT chat_messages_model_config_id_fkey FOREIGN KEY (model_config_id) REFERENCES chat_model_configs(id);
ForeignKeyChatModelConfigsCreatedBy ForeignKeyConstraint = "chat_model_configs_created_by_fkey" // ALTER TABLE ONLY chat_model_configs ADD CONSTRAINT chat_model_configs_created_by_fkey FOREIGN KEY (created_by) REFERENCES users(id);