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FS architecture and the WORM backbone

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7cd8e3e8 · PointSav Digital Systems ·

editorial(lint): banned-vocab sweep + tier-a-verified claim fix

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@@ -23,14 +23,14 @@ To ensure modularity and survivability, `service-fs` is implemented as a decoupl
- **L4: Anchoring (Workspace-Tier):** Monthly periodic work that anchors signed checkpoints to the public Sigstore Rekor log.
- **L3: Wire Protocol:** The communication interface (HTTP/axum today; MCP long-term) that enforces per-tenant `moduleId` boundaries.
- **L2: WORM Ledger API (Rust Trait):** The stable core contract (`append`, `read_since`, `checkpoint`) that survives changes to the layers above or below.
- **L1: Tile Storage Primitive:** The envelope-specific storage engine (POSIX on Linux; capability-mediated on seL4) utilizing the **C2SP tlog-tiles** format.
- **L1: Tile Storage Primitive:** The envelope-specific storage engine (POSIX on Linux; capability-mediated on seL4) using the **C2SP tlog-tiles** format.

## Dual Boot Envelopes

A core design property of `service-fs` is its ability to operate across two distinct runtime envelopes using the same codebase:

1. **Envelope A (Current):** A Linux/BSD daemon under systemd. It utilizes standard POSIX file I/O and process isolation.
2. **Envelope B (Intended):** A verified seL4 Microkit Protection Domain. It is intended to utilize `moonshot-database` (PSDB) for capability-addressed storage, providing formally verified tenant isolation.
1. **Envelope A (Current):** A Linux/BSD daemon under systemd. It uses standard POSIX file I/O and process isolation.
2. **Envelope B (Intended):** A verified seL4 Microkit Protection Domain. It is intended to use `moonshot-database` (PSDB) for capability-addressed storage, providing formally verified tenant isolation.

## Durability and Compliance
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