fix(shared): persist and reuse MCP report name across platform reconnects

[yuyutaotao]

Motivation

• Ensure different platform CLIs and device initializations reuse the same report so subsequent act/agent executions append to a single report instead of creating duplicates.
• Provide a single, simple persisted state file under midscene_run to communicate the current reportFileName between separate CLI/process invocations.

Description

• Add packages/shared/src/mcp/report-file-name.ts with readPersistedReportFileName() and persistReportFileName() to read/write ./midscene_run/current-report-name.
• Export the new helper from packages/shared/src/mcp/index.ts and add reportFileName?: string to the BaseAgent type in packages/shared/src/mcp/types.ts.
• Extend BaseMidsceneTools with getPersistedReportFileName() and persistAgentReportFileName() to centralize reading and writing the persisted name in packages/shared/src/mcp/base-tools.ts.
• Pass the persisted reportFileName into agent creation and persist the agent's reportFileName after initialization for Web (bridge/puppeteer/CDP), iOS, Android, and Computer MCP tool managers (updated files under packages/web-integration, packages/ios, packages/android, packages/computer).
• Add unit tests for the new persistence helpers in packages/shared/tests/unit-test/report-file-name.test.ts covering normal read/write and empty-name validation.

Testing

• Ran pnpm run lint which completed successfully.
• Ran the focused unit test pnpm --filter @midscene/shared exec vitest --run tests/unit-test/report-file-name.test.ts and it passed.
• Built affected packages with npx nx build @midscene/shared, @midscene/ios, @midscene/computer, and @midscene/web, all succeeded in this environment.
• npx nx build @midscene/android failed in this environment due to network ENETUNREACH during the scrcpy prebuild download (environment-specific, unrelated to code change).
• Full npx nx test @midscene/shared in this environment reported failures in unrelated existing shared tests that require extra prebuilt artifacts (IIFE bundle / tool-generator), while the new focused tests passed.

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Isolate persisted report name per MCP session

Persisting the active report to a single global file (midscene_run/current-report-name) makes every new MCP connection in the same working directory reuse the same report indefinitely, because this state is never scoped or rotated. In practice, unrelated runs (or a second MCP client started later) will append into prior sessions, merging independent executions and corrupting report boundaries/results.

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