[maxy-shpfy]

Description

Gives every Tangent session in a project a shared, persistent memory so later sessions build on what earlier ones learned, instead of each session starting cold with its own private store.

On the first session start in a project, a Tangent shared folder is provisioned and its id is saved in the project metadata (tangentSharedFolderId); subsequent sessions reuse it. Each session then mounts that folder as project/ and binds a composite memory — a human-readable simple-md note under project/NOTES plus a pi-memory store under project/pi-memory — so memory_* tool writes and files are visible across all sessions in the project. When a shared folder exists, the session's standing memory seed also includes a brief explaining how to use it (record decisions/conventions with memory_write, memory_search before re-deriving, keep project/NOTES/MEMORY.md current, never write secrets).

Provisioning is defensive: it reads project metadata from the server (not the cache) because the PATCH replaces the whole metadata object, and re-reads after creating the folder so a folder another tab saved in the meantime wins rather than splitting memory across two stores. The mutation uses a per-project scope so concurrent starts run one at a time and reuse the first folder. Any failure (missing base URL/token, Tangent or project API refusal) resolves to undefined so the session still starts — just without the shared folder.

Also bumps the @tangent/* dependencies from main to a pinned commit that provides the pi-memory memory binding support.

Related Issue and Pull requests

Type of Change

• New feature

Line Breakdown

Category	Added	Removed
Production code	209	3
Comments	26	1
Tests	376	0
Config / CI / tooling	4	4
Generated / lockfiles	277	277
Total	892	285

Checklist

• I have tested this does not break current pipelines / runs functionality
• I have tested the changes on staging

Screenshots (if applicable)

Tangent.-.Project.memory.preview.mp4

Test Instructions

1. Open a project and start a new Tangent session; confirm the project metadata gains a tangentSharedFolderId.
2. In that session, use memory_write to record something, then start a second session in the same project and confirm memory_search surfaces it and files written under project/ are visible.
3. Start two sessions in quick succession and confirm only one shared folder is created (reused, not duplicated).
4. Simulate a shared-folder creation failure (e.g. revoke the token) and confirm the session still starts without a shared folder.

Additional Comments

[github-actions]

🎩 Preview

A preview build has been created at: maxy/feat--use-pimemory-in-projects/5e388a5

[maxy-shpfy]

This changes are TMP just for tophatting - will be reverted before merge as soon as shell PR TangleML/tangent-shell#145 landed