soup: re-thin codex/claude import cluster against upstream 0.23.1 #1088

[heavygee]

Context

Upstream 0.23.1 shipped tiann#1088 (native Codex import/resume from runners), which reworked the inline CodexSessionSyncDialog + hub codexDesktop routes. This architecturally collides with the fork's codex/claude session-import cluster in the soup.

To rematerialize the soup green on the 0.23.1 base, meta temporarily parked these 3 layers (reversible manifest comments in config/driver-manifest.yaml, commit 35cd8665a):

• feat/codex-usage-indicator-rebased — bundles a redundant ListCodexSessions RPC superseded by feat(codex): import and resume sessions from runners tiann/hapi#1088
• feat/claude-session-import — refactored the Codex dialog into a shared <SessionImportPicker>; feat(codex): import and resume sessions from runners tiann/hapi#1088 evolved the inline dialog instead (add/add on CodexSessionSyncDialog.tsx, codexDesktop.ts/.test.ts)
• feat/agent-session-import-picker — stacks on feat/claude-session-import, same surface

No branches were edited — only manifest-parked.

Temporarily dark on :3006

• Codex usage/budget gauge
• Claude local-session import (upstream feat(codex): import and resume sessions from runners tiann/hapi#1088 does not replace this)
• Shared agent session-import picker (Codex + Cursor tabs)

Re-thin required (owner)

Rebase the cluster onto 0.23.1:

1. Adopt upstream's native Codex import/resume (feat(codex): import and resume sessions from runners tiann/hapi#1088) — drop the bundled fork ListCodexSessions RPC surface.
2. Re-add Claude import (unique fork feature) on top of the upstream dialog.
3. Re-extract the shared SessionImportPicker from the new upstream dialog if still desired (Codex + Cursor + Claude tabs).
4. Restore the parked heals when re-adding: 10's runCodex importCodexSessionHistory effort hunk, 50's listCodexSessionsForMachine rpcGateway hunk, 51-codex-rpc-list-export.patch.parked, and reverse the parked-cluster reconciliation in 53-park-import-cluster-signature-heal.patch.

Budget core (agentBudget, codexUsage, AgentBudgetIndicator, codexBudgetAdapter) has no refs to the sessions surface and separates cleanly — a budget-only thin branch is the fast first re-add.

Refs: tiann#1088, tiann#942, tiann#732/tiann#945, tiann#846/tiann#847