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fix(fs): persist read window offset in the read card meta

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An empty read window (byte cap below the first selected line: `lines: []`
with `totalLines > 0`) dropped `offset` from the persisted presentation
meta, so a replayed read card could not report where the window starts or
where a continuation resumes. Carry `offset` on `FsReadMeta`,
`ReadResultView`, and the `presentationMeta` projection, and validate it in
`readMetaFromMeta` (1-based integer; the first line number may not fall
below it). Re-record the ACP fixtures and the cordis api catalog.

Also correct the Note's `parallel-file-reads` golden path
(examples/tui-agent -> apps/cli) and record the pre-card replay-degradation
tradeoff in the Decision section.
This commit is contained in:
Chinesezjc
2026-07-30 22:00:35 +08:00
parent ca19468ae2
commit 4fbe46c381
24 changed files with 75 additions and 42 deletions
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examples/acp-agent/tests/snapshots/fs-read/session.jsonl
+1 -1
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@@ -14,7 +14,7 @@
{"type":"assistant/chunk","seq":52,"time":1783352073705,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
{"type":"assistant/message","seq":53,"time":1783352073708,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"reasoning","text":"The user wants me to read the file greeting.txt using the read tool (not bash), then reply with exactly the single word \"DONE\"."},{"type":"tool-call","id":"call_00_hHPZCcivsIkXAGS9jTGy8417","name":"read","arguments":"{\"file_path\": \"greeting.txt\"}"}],"source":{"kind":"model","provider":"deepseek","model":"deepseek-v4-flash"},"id":"5452254c-4843-458c-9732-12fe8b7c1468"},"usage":{"inputTokens":2882,"outputTokens":75,"cacheReadTokens":0,"reasoningTokens":29}},"sourceEventSeqs":[5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52],"surfaceOp":"append"}
{"type":"tool/call","seq":54,"time":1783352073709,"data":{"turn":1,"step":1,"callId":"call_00_hHPZCcivsIkXAGS9jTGy8417","name":"read","arguments":"{\"file_path\": \"greeting.txt\"}"}}
{"type":"tool/result","seq":55,"time":1783352073717,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_hHPZCcivsIkXAGS9jTGy8417"},"content":[{"type":"tool-result","toolCallId":"call_00_hHPZCcivsIkXAGS9jTGy8417","content":[{"type":"text","text":"<path>{{cwd}}/greeting.txt</path>\n<type>file</type>\n<content>\n1: hello\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"6dd015cf-8c8b-4fd3-a1b2-fa243d67d8e9"},"meta":{"path":"{{cwd}}/greeting.txt","lines":[{"number":1,"text":"hello"}],"totalLines":1}},"sourceEventSeqs":[54],"surfaceOp":"append"}
{"type":"tool/result","seq":55,"time":1783352073717,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"call_00_hHPZCcivsIkXAGS9jTGy8417"},"content":[{"type":"tool-result","toolCallId":"call_00_hHPZCcivsIkXAGS9jTGy8417","content":[{"type":"text","text":"<path>{{cwd}}/greeting.txt</path>\n<type>file</type>\n<content>\n1: hello\n\n(End of file - total 1 lines)\n</content>"}],"isError":false}],"role":"user","id":"6dd015cf-8c8b-4fd3-a1b2-fa243d67d8e9"},"meta":{"path":"{{cwd}}/greeting.txt","offset":1,"lines":[{"number":1,"text":"hello"}],"totalLines":1}},"sourceEventSeqs":[54],"surfaceOp":"append"}
{"type":"step/end","seq":56,"time":1783352073718,"data":{"turn":1,"step":1}}
{"type":"step/start","seq":57,"time":1783352073719,"data":{"turn":1,"step":2}}
{"type":"assistant/chunk","seq":58,"time":1783352074666,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"reasoning"}}}