fix(vis): recover headerless journals and session-root task logs

[elkholy90]

Related Issue

Internal visualizer recovery for sessions whose journals or task logs use older on-disk layouts.

Problem

The visualizer rejected headerless wire.jsonl files, treated untyped JSON as a broken main wire, and missed main-agent background tasks that still live under the session-root tasks/ directory. Imported debug manifests also passed through free-form shellEnv and omitted desktop/web log fields. Session workDir was empty when the append index was missing even if state.json still had cwd.

What changed

• Read headerless journals as protocol 1.4 and migrate them in memory. Normalize legacy plan.revision path values to the current storage key.
• Recover workDir from state.json when the session index does not have it. Sanitize untrusted agent metadata and keep Dynamic Workflow item labels.
• Sanitize imported debug manifests: string-only shellEnv fields plus desktop/web log and desktop version fields.
• List and page main-agent task output from the agent homedir first, then the legacy session-root tasks/ directory. Treat an empty primary log as present so it is not shadowed.
• Parse both epoch-ms and ISO timestamps in the session and state views.
• Include apps/vis/server and apps/vis/web in the root Vitest project list.

No changeset: vis packages are not published changelog entries.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue (external PRs: the issue must have a maintainer's /approve).
• I have added tests that prove my feature works.
• Ran gen-changesets skill, or this PR needs no changeset.
• Ran gen-docs skill, or this PR needs no doc update.

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📥 Commits

Reviewing files that changed from the base of the PR and between 09d69fe and ce149b8.

📒 Files selected for processing (22)

• apps/vis/server/src/lib/agent-record-types.ts
• apps/vis/server/src/lib/import-store.ts
• apps/vis/server/src/lib/session-store.ts
• apps/vis/server/src/lib/task-store.ts
• apps/vis/server/src/lib/wire-reader.ts
• apps/vis/server/src/routes/tasks.ts
• apps/vis/server/test/lib/agent-tree.test.ts
• apps/vis/server/test/lib/import-store.test.ts
• apps/vis/server/test/lib/session-store.test.ts
• apps/vis/server/test/lib/task-store.test.ts
• apps/vis/server/test/lib/wire-reader.test.ts
• apps/vis/server/test/routes/tasks.test.ts
• apps/vis/web/src/components/analysis/TimelineTab.tsx
• apps/vis/web/src/components/context/ContextTab.tsx
• apps/vis/web/src/components/state/StateTab.tsx
• apps/vis/web/src/components/subagents/SubagentNode.tsx
• apps/vis/web/src/components/wire/WireTab.tsx
• apps/vis/web/src/pages/SessionDetailPage.tsx
• apps/vis/web/src/pages/SubagentDetailPage.tsx
• apps/vis/web/src/util/time.ts
• apps/vis/web/test/time.test.ts
• vitest.config.ts

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commit: ce149b8