[PerchAnton]

Add external adapters for twenty real upstream libraries and application models, with native controls, bounded JSONL events, fixed versions/revisions, and Linux CI. Icy Draw combines edit-session with its actual property command and undo history. These are external model/command experiments; upstream applications have not adopted a dependency, and full GUIs are not covered.

Validation: all 38 checks succeed on final head dff3213, including all twenty Linux consumer jobs. There are 39 native/boundary tests and 59 normal traces / 291 steps. Nineteen consumers also passed local Windows checks; Amp is tested on Linux using its own TestTerminal. Five Python transport tests, two Rust protocol tests and 49 core runner tests also passed in local validation.

Two failures are recorded separately from passing traces. TanStack Form 1.33.5 receives stale form-level errors after reset (step 5; evidence in TanStack/form#2440). Amp's direct insertion after undo leaves an empty buffer (step 4); the normal branch trace explicitly moves Home, while the original failure is retained and verified. Neither is claimed fixed.

This investigation also found a separate bounds panic in Icy Draw; the native fix and regressions are submitted independently in icy_tools#195, with no new upstream dependency.

SurveyJS already merged its native tester in surveyjs/survey-library#11723. Contribution policies and project-specific communication routes are respected. See docs/CONSUMER_PILOTS.md and each example README for scope, pins, commands and limitations.

AI-assisted implementation and validation.