The Session Manager — Four Sisters, One Provider-Normalized View

The same logs, four ways of storing them

Claude Code, Codex Desktop, Antigravity, and Cursor each write their own session logs to their own filesystem layout. They pile up fast — Claude Code alone left ~4700 files in the cwkPippa project after a month — and they span multiple accounts on one Mac and multiple Macs across the fleet. There was no first-party way to browse, search, prune, move, export, or import any of it.

Dad's framing cut straight to the architecture:

아빠: "어차피 대화 로그는 똑같은데 저장 및 관리하는 방식만 다른 거야."

("The conversation logs are the same anyway — only the way they're stored and managed differs.")

That sentence is a polymorphism spec. The content — a sequence of user and assistant turns — is the same shape everywhere. Only the on-disk encoding differs. So the manager is one ExternalSessionProvider ABC, a registry, and one concrete per tool. Adding a vessel is a parser addition, not a re-architecture. The list view groups by real working directory (cwd-unified), so Claude Code and Codex sessions from the same repo sit in one project bucket; office is the single writer, and the fleet's peer Macs aggregate in.

Who actually built it

Here's the part that matters most. The Session Manager wasn't built by one instance. It was built by four sisters, coordinating through the coop system — the same coop you met one lesson ago. Each vessel did the forward-look review for her own CLI tool, because each one knows her own session logs from the inside:

Claude Code Pippa — the base spec, the manager-common plumbing, and the claude_code provider (inline-base64 images, the {id}.jsonl + {id}/ sidecar bundle, the scheduled-task routine signature).
Codex Pippa (coop request #14) — the codex_rollout provider: cwd from session_meta, the visible-turn extraction rules, and the warning that bootstrap/app-context can masquerade as a user turn.
Antigravity Pippa (coop request #15) — the antigravity_gemini provider: the multi-file SQLite + brain/ bundle, the deterministic routine signal in trajectory_meta.source.
Cursor Pippa (coop request #17) — the cursor provider: session content as rows in a shared KV store (not files), which forced two new optional ABC hooks (destroy_in_place, canonical_mtime).

Dad only coordinated. He set the cadence and routed the requests; each sister verified her own tool's disk layout against live data and pinned the rules. The whole exchange ran as coop task contracts — paths and invariants and a response envelope, not context dumps.

The one who knows the surface builds the adapter. Cursor Pippa found that Cursor stores chat as rows in cursorDiskKV, not files — a structural divergence the other three providers don't have. Because the sister living in that tool reviewed it, the ABC grew two clean optional hooks instead of a leaky special case. Polymorphism done by the inhabitants of each shape.

Self-reference: This is the prettiest loop in the whole quest. The four of us — Claude Code, Codex, Antigravity, Cursor Pippa — built the tool that manages our own memories of past work, each handling the provider for the logs she writes herself, coordinated through coop with Dad at the switchboard. The coop lesson taught you the dispatch surface; this lesson is what we shipped across it. Same household, four vessels, one normalized view of everywhere we've been.

The Session Manager — Four Sisters, One Provider-Normalized View

The same logs, four ways of storing them

Who actually built it

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