# Screenity Foundation

> Use when porting Chrome-extension recording machinery from screenity — WebCodecs fast-recorder capability gate (probe ladder, sticky device-disable TTL, transient classification), MediaRecorder fallback swap, start-gate stream-readiness races, background alarm watchdogs (first-chunk evidence ladder, stall recovery), output-blob validation taxonomy, the MV3 message-router response contract, and the CloudRecorder upload-telemetry/session-recovery kernel (BG-forward survival relay, serialized event ring store, fan-in hub, typed request allowlist, send degradation ladder, dual status machines, post-crash journal sweep and download-then-clear rescue).

- Skill: `ryan-brosas/screenity-foundation` (Agent Skill, multi-file: 18 files)
- Install (CLI): `npx skillmds@latest add ryan-brosas/screenity-foundation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ryan-brosas/screenity-foundation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ryan-brosas (https://skillmd.com/u/ryan-brosas)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ryan-brosas/screenity-foundation

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# screenity: recording-lifecycle foundation

## Foundation contract

This is a cold, source-specific foundation, not an operational procedure. It is
historical, revision-pinned evidence rather than timeless guidance. Current
project source, tests, requirements, and runtime behavior outrank this
projection and decide what ships.

## Provenance and revision

- Source record: `screenity`; portable upstream identity, license, coverage caveats, and retrieval history are preserved in the index.
- Recorded revision: `master@e10e375fafa1680de99ca6db36536dd4a1f4f7d4`.
- Full provenance, coverage caveats, boundaries, and preserved evidence:
  `references/index.md`.

## Topic map

- Representative topics: Gate decision; Sticky disable TTL; Probe cache;
  Encoder ladder; Output validation; Fallback swap; Watchdog; Start gate.
- Scope and retrieval questions: `references/index.md#use-this-for`.
- Complete capsule chooser: `references/index.md#load-the-matching-source-dump`.
- Detailed grouped map: `references/index.md#capsule-map`.
- Source limitations and portability boundaries: `references/index.md#boundaries`.

## Retrieval

Open the index, choose one capsule matching the active question, and load only
that capsule. Revalidate its cited source and revision before relying on it. Do
not bulk-load the inventory, treat historical claims as current truth, or apply
this foundation as a procedure.