vn_selftest — the conversation layer's own proof

vn.vn runs whatever Game.registerDialogue was handed and knows no characters. This is the throwaway script it proves itself against: one voice, Echo, that exists only to walk every branch of the runner.

local T = require("vn.vn_selftest")
T.install()                 -- portraits from the sheet
T.install(T.IMAGES_KEY)     -- the same script, portraits from five images
require("game.Game").startDialogue(T.SCRIPT_ID)

Nothing loads this at boot.

What one run exercises

• every emotion frame, in order — neutral → warm → hurt → angry → broken
• a four-way choice list, and a loop back to it
• a branch ending done = "refused"
• a node carrying grant, then a node ending done = "granted"
• a node with no next / choices / done, which ends with outcome "end"
• startFaded, a two-line set used instead when Game.fading() is past Game.tuning.fadedThreshold

The grant node hands over T.PROBE_RESONANCE, which belongs to no ending, so proving the grant path never puts a real Resonance in the player's hands.

The art

/zero/source/vn/art/ — five emotion frames drawn for this harness, published twice over: echo_sheet (a 5×1 strip) and echo_<emotion> (five singles). The two registrations T.install makes are the two shapes Game.registerPortrait accepts, so one script proves both paths through vn_view.