0.19.0

• tf: drop Node 22 — remove --experimental-strip-types, bump engines.node to >=24, add .node-version, remove the node22 CI job #872
• tf: restore the Playwright bridge as playwrightTestContext, detected via the PLAYWRIGHT_TEST environment variable #872
• tf: add the Engine type, bunTestContext, inlineTest, and inlineContext — fixes Bun's ERR_NOT_IMPLEMENTED on nested t.test() #872
• tf: add scenario tests in fs/dev/tf/scenarios/ with a run.sh covering node/bun/deno/playwright #872
• tf: add registerModule, registerModuleMap, and register — a pure Effects layer for registering tests with external frameworks #872
• bit_vec: make list concatenation a BitOrder member (order.listToVec) and drop the free listToVec factory #865