[cmena92]

Closes #40

Gestures

• Left alone, every 8 to 15 s it stretches, yawns, waves, dances or looks around: CSS on the body or the face, no new art.
• Never while the page is hidden, under reduced motion, asleep, or in the middle of a reaction. Falling asleep ends a running gesture, so it cannot wake it.

Touch

• A stroke of the finger is a cuddle: hearts follow the finger, and the bond counts it as acariciar under the 30 s rule. The click that ends a stroke is not a touch.
• A double tap is a jump and a laugh. The card keeps touch-action: pan-y, so a vertical swipe still scrolls.

Sounds

• www/games/companero/sonidos.js synthesises a crunch, bubbles, a bounce, a laugh and a yawn with WebAudio: no files, no network.
• Nothing plays unless the app's sound setting is on (read, never written). A touch opens the AudioContext; the idle yawn never opens it by itself.

Checks run locally

• node tools/test-companero.js: 280 green, five runs.
• The browser group injects a probe before load (idle waits a hundredth as long, a hidden flag, every oscillator and buffer counted). It counts sounds, not contexts, because the core opens its own AudioContext on the first touch even with sound off.
• Checks: idle gestures, none while hidden or under reduced motion; a stroke gives +1 bond and hearts, a second within 30 s adds nothing; double tap; no sound with sound off; a laugh with sound on.
• node tools/test.js: 5,610 green · ./tools/browser-check.sh: 52 of 52.