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Gemini Executive Synthesis

`~/.persome/index.db` database corruption within the `personal-model` runtime, specifically involving SQLite page misplacement during multi-process access under a `SIGBUS` storm.

Technical Positioning
Robust data integrity and resilience for local, personal data stores, especially under high-stress or multi-process access conditions. Ensuring the core database remains consistent and recoverable, even during system-level signal storms.
SaaS Insight & Market Implications
This incident highlights a severe data integrity failure within a personal data model, where the core `index.db` database experienced critical corruption due to page misplacement during a `SIGBUS` storm under multi-process access. While the system's recovery mechanism (quarantine and rebuild from backup) functioned as designed, the root cause of the `SQLite` page corruption points to fundamental vulnerabilities in concurrent database operations or OS-level signal handling. For B2B SaaS, such data corruption, even if recoverable, represents a significant reliability risk. It underscores the necessity for extreme robustness in local data persistence layers, particularly when exposed to multi-process environments, to prevent service interruptions and maintain user trust in data integrity.
Proprietary Technical Taxonomy
index.db corruption SQLite format 3 header page byte offset page boundary b-tree leaf page file is not a database MCP tools integrity tick

Raw Developer Origin & Technical Request

Source Icon GitHub Issue Jul 13, 2026
Repo: Intuition-Lab/personal-model
index.db corruption: page 1 written at wrong offset during -shm SIGBUS storm under multi-process MCP access

## Summary

On 2026-07-14 ~02:16 local, `~/.persome/index.db` (127 MB) was corrupted in a distinctive way: **the database's page 1 (the `SQLite format 3` header page) was written at byte offset 802816 — exactly page boundary 196×4096 — while page 1 itself was overwritten with a b-tree leaf page (first byte `0x0D`)**. Every open then failed with `file is not a database` and all MCP tools went down. The integrity tick detected it at 03:21, quarantined the file, and rebuilt from `backup/evo-20260712.db` + the Markdown memory projection (worked as designed 👍).

The runtime is v0.3.2, daemon under launchd (`start --foreground`, `KeepAlive=true`), WAL mode, `synchronous=NORMAL`, `wal_autocheckpoint=1000`, daily `wal_checkpoint(TRUNCATE)`.

## Evidence

**1. The corrupt image is a whole DB shifted/misdirected at page granularity, not random garbage**

```
file size: 127578112 = 31147 pages of 4096
"SQLite format 3\0" found at offset 802816 (= 4096 × 196, a page boundary)
embedded header claims page_size=4096, page_count=31147 → 127578112 bytes = exact file size
page @ 0: 0x0D (table leaf) page @ 4096: 0x05 (interior) ...
```

I.e. the header page believes it sits at offset 0 of a 31147-page database, but it was physically written 196 pages in. Copying that page back to offset 0 yields a recognizable schema (all tables listed) with scattered btree/freelist damage — so a set of otherwise-valid page images was written **at the wrong offsets**.

**2. A SIGBUS crash storm in `walFindFr...

Developer Debate & Comments

No active discussions extracted for this entry yet.

Adjacent Repository Pain Points

Other highly discussed features and pain points extracted from Intuition-Lab/personal-model.

Extracted Positioning
Streamlining the integration of `Persome` with the `Cursor` IDE via a safe, one-command `MCP` (Multi-Client Protocol) registration and unregistration mechanism, similar to existing idempotent installers for other clients.
Enhancing developer experience and reducing integration friction for key IDEs. Providing robust, idempotent, and non-destructive configuration management for external client integrations.
Extracted Positioning
Improving first-run Accessibility permission diagnostics and recovery for the `personal-model` daemon on macOS, specifically clarifying the owning process and necessary user actions when capture fails due to permission issues.
Enhancing user experience and reducing friction during initial setup and troubleshooting for macOS-dependent features. Providing clear, actionable, and privacy-preserving diagnostics to guide users through complex OS permission configurations.
Extracted Positioning
Ensuring graceful degradation and clear diagnostics for OCR functionality on Intel macOS systems within the `personal-model` platform, where Paddle/PaddleOCR dependencies are Apple-Silicon-only.
Maintaining broad platform compatibility and a consistent user experience across different hardware architectures, even when specific features are unavailable. Providing clear, actionable diagnostics for feature limitations rather than hard failures.
Extracted Positioning
Publishing a machine-validatable JSON Schema for the `personal-model`'s redacted public model export contract, accompanied by a synthetic golden export, to facilitate external integrations and independent validation.
Formalizing and standardizing the public data export contract through a machine-readable schema, ensuring external integrators can reliably validate data structures. This promotes API stability, reduces integration friction, and reinforces data privacy by using synthetic, redacted examples.
Extracted Positioning
Defining a stable, privacy-reviewed, versioned interchange contract for exporting synthetic or consented `Runtime` outputs from `persome-core` to an external `persome-bench` repository for research evaluation, without exposing internal database structures.
Establishing a clear, secure, and versioned API for data export, enabling external research and benchmarking while strictly adhering to privacy principles and maintaining separation of concerns between core runtime and evaluation components.

Frequently Asked Questions

Market intelligence mapped to `~/.persome/index.db` database corruption within the `personal-model` runtime, specifically involving SQLite page misplacement during multi-process access under a `SIGBUS` storm..

How is `~/.persome/index.db` database corruption within the `personal-model` runtime, specifically involving SQLite page misplacement during multi-process access under a `SIGBUS` storm. positioned in the market?
Based on our AI analysis of the original developer request, its primary technical positioning is: Robust data integrity and resilience for local, personal data stores, especially under high-stress or multi-process access conditions. Ensuring the core database remains consistent and recoverable, even during system-level signal storms.
Which technical concepts are associated with `~/.persome/index.db` database corruption within the `personal-model` runtime, specifically involving SQLite page misplacement during multi-process access under a `SIGBUS` storm.?
Our proprietary extraction maps `~/.persome/index.db` database corruption within the `personal-model` runtime, specifically involving SQLite page misplacement during multi-process access under a `SIGBUS` storm. to adjacent architectural concepts including index.db corruption, SQLite format 3 header page, byte offset, page boundary.

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