Add blog post: speaker verification comes to OVOS

[JarbasAl]

What

Adds a new blog post announcing speaker verification for OpenVoiceOS:

• ovos-ww-verifier-plugin-speaker — a wake word verifier plugin that extracts a speaker embedding after a wake word fires and only lets through voices enrolled in the household.
• ovos-dinkum-listener#191 — the underlying wake word verifier framework that runs verifier plugins (fail-open) before any recording/intent handling.

Why it matters

• Fewer false activations — stray "Hey Mycroft" from the TV/radio won't match an enrolled voice, so it's dropped.
• More privacy & control — only authorised users can issue commands. No more "Hey Mycroft, order a thousand cheeseburgers" from a guest who thinks he's funny.
• Privacy by design — profiles are stored as local, non-reversible numeric embeddings; no audio retained; everything runs locally.

Post details

• File: _posts/2026-06-16-speaker-verifier.md
• Author: JarbasAl (consistent with prior plugin-announcement posts)
• Cover image: reuses /assets/blog/common/cover.png (no new asset / no broken link)
• Config, enrollment command, default model/threshold, and tuning notes taken verbatim from the plugin README.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Added documentation for the OVOS Wake Word Verifier Plugin—Speaker, covering speaker verification mechanisms, privacy behavior, installation and enrollment procedures, configuration options, and threshold tuning guidance.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: add37837-1993-4143-b874-82a8875ba3e1

📥 Commits

Reviewing files that changed from the base of the PR and between d835c41 and 4dc31d4.

📒 Files selected for processing (1)

• _posts/2026-06-16-speaker-verifier.md

📝 Walkthrough

Walkthrough

A new blog post is added at _posts/2026-06-16-speaker-verifier.md introducing the OVOS Wake Word Verifier Plugin for speaker verification. It covers the verification concept, privacy design using local speaker embeddings and cosine similarity, installation/enrollment steps, mycroft.conf configuration, threshold tuning, and project attribution.

Changes

OVOS Speaker Verifier Blog Post

Layer / File(s)	Summary
Front matter, concept narrative, and privacy design _posts/2026-06-16-speaker-verifier.md	Post metadata is defined; the article describes the false-activation problem, the wake-word gating framework, speaker-embedding verification flow, and privacy-by-design properties (local-only, non-reversible numeric embeddings, no audio retention).
Setup, configuration, tuning, and attribution _posts/2026-06-16-speaker-verifier.md	Installation and enrollment commands are shown alongside a mycroft.conf hotword/verifier configuration example; threshold tuning, per-profile thresholds, and fail_open semantics are explained; attribution, funding, and contribution prompts close the post.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐇 A voice at the gate, a cosine to weigh,
No strangers shall trick my assistant today!
I enrolled every hop in my household with care,
With embeddings so local, no cloud in the air.
"Help build voice for all!" cries the rabbit with glee,
One blog post at a time — open, private, and free! 🎙️

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Add blog post: speaker verification comes to OVOS' clearly and accurately summarizes the main change—adding a blog post announcing speaker verification capabilities for OpenVoiceOS.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch add-speaker-verifier-post

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