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feat(fs): add a minimal read_image tool over the attachment and fs seams

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The model reads a PNG/JPEG/WebP/GIF file, the bytes commit through the
durable attachment lifecycle, and the tool result carries the real
ImageBlock so the image enters context from the next request onward.
FileSystem gains a bounded readBytes primitive (local + E2B providers);
registration is conditional on the attachment store, and a strict
execution gate refuses routes that do not declare image input, so a
text route's durable history stays free of image blocks. llm-replay
models may declare inputModalities, letting keyless ACP snapshots pin
both the sha256-referenced success and the verbatim refusal.

Supersedes the withdrawn route-scoped design of PR #598; the decision
record is .agents/notes/implemented/feature/2026-08-10-minimal-read-image-tool.md.
This commit is contained in:
creatixchu
2026-08-10 15:09:07 +08:00
parent 3764ce62a5
commit 1861a3fc7c
65 changed files with 1973 additions and 67 deletions
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docs/module-graph.md
+2 -1
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@@ -775,6 +775,7 @@ flowchart TD
pkg_bash_env --> pkg_paths
pkg_bash_env --> pkg_session_persistence
pkg_bash_env --> pkg_tools
pkg_tool_fs --> pkg_attachment
pkg_tool_fs --> pkg_fs
pkg_tool_fs --> pkg_invariants
pkg_tool_fs --> pkg_llm
@@ -1361,7 +1362,7 @@ flowchart TD
| [`agent-tool-mode`](../packages/core/agent-tool-mode) | `core` | [`invariants`](../packages/support/invariants), [`tools`](../packages/core/tools) |
| [`tool-goal`](../packages/goal/tool-goal) | `goal` | [`agent`](../packages/core/agent), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
| [`bash-env`](../packages/bash/bash-env) | `bash` | [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`session-persistence`](../packages/session/session-persistence), [`tools`](../packages/core/tools) |
| [`tool-fs`](../packages/fs/tool-fs) | `fs` | [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`user-approval`](../packages/interaction/user-approval) |
| [`tool-fs`](../packages/fs/tool-fs) | `fs` | [`attachment`](../packages/attachment/attachment), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools), [`user-approval`](../packages/interaction/user-approval) |
| [`tool-fs-search`](../packages/fs/tool-fs-search) | `fs` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`session`](../packages/core/session), [`spill`](../packages/spill/spill), [`subprocess`](../packages/subprocess/subprocess), [`system-prompt`](../packages/core/system-prompt), [`timeout`](../packages/util/timeout), [`tools`](../packages/core/tools) |
| [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) | `fs` | [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`tools`](../packages/core/tools) |
| [`tool-skill`](../packages/skill/tool-skill) | `skill` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`skill`](../packages/skill/skill), [`tools`](../packages/core/tools) |