BrowserCortex 0.3.0-beta.1

BrowserCortex 0.3.0-beta.1 public release report

Release identity

Field	Value
Product	BrowserCortex
Version	0.3.0-beta.1
Source commit	cff509b9e24bd75901e93480df58ab253df0d4a1
Source tree	88967c56fa6944305279af738efa31359dcd7d2e
Distribution	Developer-mode unpacked Chromium extension
Browser-store approved	false
Minimum Chrome version	116

Privacy treatment

The public evidence bundle deliberately excludes personal contact data, absolute home-directory paths, machine names, exact operating-system builds, processor and graphics-adapter identities, memory size, browser storage size and quota, and per-run identifiers. The source evidence remains bound to the commit, source tree, extension archive, and application digests through cryptographic hashes.

Deterministic local benchmark

600/600 synthetic cases passed, with all quality gates passing.

Suite	Passed	p50 ms	p95 ms
extraction	150/150	0.001	0.003
routing	100/100	0.015	0.05
retrieval	100/100	0.022	0.086
privacy	100/100	0.02	0.068
workflow	100/100	4.176	5.138
adversarial	50/50	0.046	0.23

This benchmark measures deterministic Node implementations. It is not a browser, graphics, real-model, or cross-device benchmark.

Real-model verification

• Status: passed
• Embedding vector validity: 3/3
• Embedding retrieval correctness: 3/3
• Generation marker checks: 40/40
• Generation schema validity: 2/2
• In-flight cancellation: passed

Generation semantic correctness was 0/2, and missing-fact abstention was 0/1. These are visible report-only measurements. Model output remains untrusted proposed content and must pass independent source, schema, policy, approval, and effect checks.

Artifact inventory

Asset	Bytes	SHA-256
browser-cortex-extension-v0.3.0-beta.1.zip	7540753	761173f0544a8ba665f0d3b6c374390ff0858140edfea45ae3d22f414895c20c
browser-cortex-extension-v0.3.0-beta.1.zip.sha256	109	3a2856e37957014fe94ec414983492fbbb632808c3ef035d63e331cc718871cc
build-provenance.json	7339	a08db21bd8079afe03e4d7d0239a9995c8b37cc14e7e85d393cc2673c7a5ea28
compatibility.json	2161	996868006f6fceda70ea511f2cccb481245a28c029405fd7c27007e040370963
extension-panel.png	144197	13b6c27a85ab607b502e62efdacbfce7af0748f4f09d6099f4823866821c0ba3
LICENSE	11358	c95bae1d1ce0235ecccd3560b772ec1efb97f348a79f0fbe0a634f0c2ccefe2c
local-benchmark.json	125867	1e5e2e5e233a280221dcd11dda876279635d334f883a87536359f78ad5fca1f4
local-benchmark.md	2805	1ee59fb6693fac848e7ba1011996fd41cf88f16fe5b95fc00d19f259453e90b0
real-model-verification.json	19971	2bb89d08151e8e77aa54cd27f1ce2894bf7abafcbb2be90b14bbc2646e30cc3e
real-model-verification.md	3533	275e77e60756ec8363729283ec592fb2456bd3520aa411fe36258ac70d88003a
sbom.cdx.json	19030	e94053ba6aacbfbf4c48a8e3018b6e168baf174d5ba4eaecf00733944d98b3f4
THIRD_PARTY_NOTICES.md	3379	c5c658501b0a06b64d172dccdb65b98a8f5f918239570f7429a711fe1d5af6c3
workbench-overview.png	141670	974e9b20d5a930d0dc7dbd0ef61559fffe31a467677e5aac682c1af945caf55f

The extension checksum file can be verified with a SHA-256 tool before extraction. The compatibility record binds the public reports and sanitized provenance to the same release archive.

Boundaries

• The ZIP is a developer distribution and has not been reviewed by a browser store.
• The model observations describe one redacted runtime configuration and do not establish broad hardware support.
• The quality probes are small, synthetic regression checks rather than a general factuality, safety, or privacy evaluation.
• Firefox, Safari, mobile browsers, private mode, enterprise policy, and low-memory devices remain unsupported or unverified unless a later compatibility report says otherwise.
• Public evidence sanitation removes host-specific details; it does not weaken the product's local-first, approval, or policy boundaries.

Generate this directory from already verified release inputs with pnpm release:public.