docs: record agent conversation file interaction proposal

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+# Task: Review Agent conversation file interaction
+
+## Identity
+
+- Task ID: 20261012-agent-chat-files-review-e87b41c6
+- Mode: Feature
+- Branch: codex/20261012-agent-chat-files-review-e87b41c6-agent-chat-files-review
+- Worktree: /Users/chillishark/Makelore 麦洛/.codex-worktrees/makelore/20261012-agent-chat-files-review-e87b41c6
+- Base commit: bcb1b61564b05c92fb51d8791ce15db3ab8e8b2c
+- Owner: codex
+- Status: Ready for Integration
+
+## Scope
+
+- Discussion-only review of the personal Agent conversation's “对话文件” entry, grounded in the currently deployed source. Only this task record changes.
+
+## Intent And Constraints
+
+- Explain the current function in Chinese product language and recommend clearer file/image interactions for the child-facing product. The user has not authorized implementation of this proposal.
+- Preserve Main-owned upload/confirmation/download, per-conversation access, attachment retry identity and chat history. Removing an attachment from the pending message only deselects it; it does not delete the cloud file.
+- Do not modify source, shared canonical documents, the temporary application, deployment pointers or remote branches.
+
+## Outcome
+
+- Source review confirms “对话文件” expands a panel containing previously uploaded files selectable for the current message, an optional upload/reading-method flow, and a per-thread generated-file browser with folder navigation and download. This mixes sending materials, choosing reading settings and collecting outputs behind one vague label.
+- Recommendation pending user approval: use the composer’s plus menu for uploading files/images and reusing files from this conversation; show selected files as removable cards/thumbnails before sending and as attachments with the sent user message; present generated files as view/save cards within the relevant assistant reply. Avoid exposing storage paths, folder management and technical reading choices in the ordinary flow. Preview support and message/file linkage require contract assessment before any implementation.
+- Concurrent and Planning Gates passed. 42 peer scopes checked read-only; no dependency blocks this discussion. Existing composer and history tasks supply preservation constraints. Older ADR interface details are historical context; the user's later simplification decisions govern this discussion.
+
+## Verification
+
+- Inspected `src/pages/CloudAgents/CloudComposerAttachments.tsx` and `CloudChat.tsx` at base `bcb1b61564b05c92fb51d8791ce15db3ab8e8b2c`, inherited from the confirmed deployed card-restoration source. No new native UI screenshot, real cloud upload, file preview or model call was performed.
+- Required project context and relevant personal-cloud-agent decision read; peer review verified all 42 records were readable. One old peer scope remains undefined without any concrete dependency.
+- Documentation drift and whitespace checks recorded at completion. Product code/build unchanged; application tests/build are unnecessary for a discussion-only record.
+
+## Follow-ups
+
+- Continue discussion and obtain the user's approval before implementation. If approved, inspect cloud history/attachment contracts for sent-message attachment association, supported preview formats and generated-file linkage; preserve upload/retry/download boundaries.
+
+## Promotion Candidates
+
+- No accepted product change to promote. The interaction above remains a proposal and requires human confirmation before updating README or accepted decisions.