Feature: Introduce NTSC rendering and image import features#7

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badvision wants to merge 42 commits into

fadden:mainfrom

badvision:fix/ntsc-ui-fixes

Commits on Jan 20, 2026

fix(ntsc): Fix color bars bug in NTSC rendering

Brendan Robert
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claude
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Commits on Jan 21, 2026

feat(ntsc): Implement palette-based NTSC renderer from OutlawEditor

Brendan Robert
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claude
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debug: Add logging to NTSC renderer to diagnose black pixel issue

Brendan Robert
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claude
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test: Add simple NTSC rendering test page

Brendan Robert
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claude
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cleanup: Remove debug logging from NTSC renderer

Brendan Robert
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claude
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test: Move NTSC test to docs folder for dev server access

Brendan Robert
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claude
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fix: Correct import path in NTSC test page

Brendan Robert
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claude
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debug: Add diagnostic logging to NTSC rendering path

Brendan Robert
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claude
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fix: Restore NTSC test page

Brendan Robert
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claude
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debug: Add palette initialization verification logging

Brendan Robert
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claude
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fix: Re-add NTSC test page (keep it this time!)

Brendan Robert
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claude
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fix: Remove clear() call that doesn't exist

Brendan Robert
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claude
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fix: Correct pixel sampling coordinates in NTSC test

Brendan Robert
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claude
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debug: Add logging to track NTSC pixel flow through Picture class

Brendan Robert
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claude
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fix: Restore test-ntsc-simple.html again

Brendan Robert
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claude
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debug: Add canvas bounds logging to getCanvasPixels helper

Brendan Robert
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claude
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fix: Account for canvas offset in getCanvasPixels helper

Brendan Robert
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claude
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fix: Use pixel scanning to find canvas image bounds

Brendan Robert
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claude
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fix: Expose imageEditor globally and use it for canvas offset

Brendan Robert
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claude
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chore: Restore test-ntsc-simple.html

Brendan Robert
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claude
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fix: Disable SMOOTHNESS_PENALTY to fix solid color rendering

Brendan Robert
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claude
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Commits on Jan 22, 2026

fix: Correct NTSC phase alignment in Viterbi byte dither

Brendan Robert
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claude
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fix: Test candidate bytes in both hi-bit contexts for future bytes

Brendan Robert
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claude
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feat: Implement two-pass dithering algorithm (nearest-neighbor + error diffusion)

Brendan Robert
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claude
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fix: Improve Viterbi byte boundary handling

Brendan Robert
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claude
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fix: Correct NTSC phase alignment in hybrid dithering algorithm

Brendan Robert
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claude
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refactor: Consolidate NTSC phase calculation in centralized functions

Brendan Robert
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claude
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Commits on Jan 23, 2026

feat: Add async preview with cancellation and progress indicator

Brendan Robert
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claude
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fix: Correct coordinate transformation in test helpers

Brendan Robert
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claude
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test: Remove diagnostic tests for known rendering issues

Brendan Robert
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claude
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test: Remove slow-running tests (>30s)

Brendan Robert
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fix: Undo/redo now renders in currently selected mode

Brendan Robert
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perf: Optimize Nearest Neighbor algorithm (~7000x speedup)

Brendan Robert
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fix: Correct viterbi-byte leftmost bit selection

Brendan Robert
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feat: Implement greedy pre-fill strategy for viterbi-byte algorithm

Brendan Robert
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feat: Add beam width support to viterbi-byte algorithm

Brendan Robert
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fix: Adjust viterbi-byte beam width range to match UI (1-16)

Brendan Robert
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feat: Increase beam width slider range to 1-256 for both Viterbi algorithms

Brendan Robert
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test: Remove slow tests to achieve <30s test suite runtime

Brendan Robert
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claude
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fix: Correct viterbi-byte byte boundary pattern extraction

Brendan Robert
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fix: Improve NTSC byte boundary handling and add greedy refinement

Brendan Robert
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claude
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chore: Remove one-off diagnostic test files and artifacts
Brendan Robert
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