- Updated compaction, branch summarization, and session dump formatting to pass preferred model tool syntax into conversation serialization.
- Enhanced shared serializers to render assistant tool calls and tool results through grammar envelopes when syntax is available, with the prior compact format as fallback.
- Aligned prompt, preview, and test fixtures to the new transcript tags: `[Think]`, `[Tool Call]`, and `[Tool Result]`.
- Added 8on22-bw and 11on16-bw variants with spacing-tuned defaults for snapcompact.
- Changed provider defaults/mappings to use 11on16-bw for Anthropic and 8on22-bw for OpenAI/Google.
- Updated model frame rules so claude/fable/opus and gemini/gpt families map to new shapes and 2048 billing behavior.
- Fixed non-multiplexer resize dragging by using alternate screen during transient resize frames.
- Added optional `useless` flags to tool result types and payload builders.
- Added `pruneUseless` and `dropUeless` options to control uneventful result pruning.
- Changed compaction and shake passes to prune or ignore non-error useless tool results.
- Changed conversation serialization to omit useless toolCall/toolResult pairs from output.
- Added coverage for useless tagging, pruning, and serialization behavior.
- Used per-frame palette usage statistics to remap global indices into a compact local palette before PNG encoding.
- Encoded indexed outputs with dynamic 1-, 2-, and 4-bit depths based on used color count.
- Raised PNG compression from Balanced to High for indexed and RGB paths and updated parity and decode tests for variable-bit palette decoding.
- Implemented model-specific frame-size billing for Anthropic, OpenAI, and Google.
- Changed compaction shape resolution to bind model variants to ideal frame sizes.
- Updated tests and docs to reflect new frame-size and budget behavior.
- Adjusted snapcompact rendering to compute used rows from text, dim toggles, and doc line breaks, then derive output height from usedRows x lineRepeat x cellHeight.
- Updated indexed and RGB PNG encoders to accept explicit canvas width and height so native renders now emit non-square frames matching actual content.
- Expanded Rust and TypeScript tests and updated docs/changelogs to assert and describe variable-height frame behavior.
- Added support for `{api,id}` `ShapeTarget` in `resolveShape`, deriving variants from model IDs.
- Added provider budget APIs/constants and `providerFrameBudget` clamping with `MAX_FRAMES`.
- Added `Archive.textTail` and moved overflow pages into plain-text tail folding across frames.
- Updated summary prompt rendering to show continuation only when `textTail` exists and append it as text.
- Repointed `SHAPES.anthropic` and the `anthropic-messages`/unknown-API fallback in `resolveShape` at the `6x12-dim` variant: production mono eval on claude-fable scored f1 .840 vs .877 for the repeated grid (within noise at n=25) at 37% lower cost, with no refusals.
- Reworded the `snapcompact.shape` descriptions in `settings-schema.ts` to drop per-provider eval-winner claims from the variant help text.
- Updated `snapcompact.test.ts` (new `6x12-dim` default render/compact assertions, `8x8r-bw` exercised via `resolveShape`), `snapcompact-inline.test.ts` frame math for the new geometry, and the `docs/compaction.md` shape sentence.
- Amended the snapcompact `[Unreleased]` entry that said the Anthropic default stayed `8x8r-bw` and added the default-switch entry.
- Resolved OpenAI shape resolution to `openai` and default to `8on16-bw`.
- Fixed catalog generation to collapse effort tiers before provider grouping.
- Updated help text and schemas to describe `8on16-bw` as the OpenAI auto default.
- Added production `render_pages` and `mono_prod` scripts for end-to-end QA output.
- Added `6x12-dim`, `8x13-bw`, `8on16-bw`, `doc-8on16-bw`, `doc-8on16-sent`, and `doc-8on16-sent-dim` to `SHAPE_VARIANTS`, backed by new `Shape` fields `stretch`, `columns`, and `stopwordDim` and the X.org `6x12`/`8x13` fonts.
- Added `dimStopwords()` (high-frequency function words printed in dim ink via zero-width markers, skipping already-dim spans) and `wrap()`, the greedy word-wrap used to typeset doc-layout pages; `geometry`/`render`/`renderMany`/`frames`/`compact` paginate doc shapes into `2 * rows`-line pages and persist `columns`/`stopwordDim` on compaction frames for mixed-shape detection.
- Changed `normalize()` to keep line structure (whitespace runs containing a line break collapse to `NEWLINE_GLYPH`, U+2588 FULL BLOCK) and to drop unrenderable characters — ANSI escape sequences, control characters, zero-width format characters, combining marks, lone surrogates — instead of printing `?` blanks.
- Explained the line-break marker in the frame-reading prompt `snapcompact-summary.md` and extended `snapcompact.test.ts` for the new variants, wrapping, and normalization.
- Added the `research/parity_check.py` and `research/parity_render.ts` parity tooling for the native renderer.
- Recorded the snapcompact changelog entries.
- Added snapcompact.shape setting with auto and variant options in agent config.
- Implemented resolveShape support for forced variants, auto provider winners, and repricing.
- Threaded resolved shape into compaction and inline-image flows for pricing and rendering.
- Renamed all functions, types, and constants in @oh-my-pi/snapcompact to namespace-relative names (`snapcompactCompact` → `compact`, `renderSnapcompactFrames` → `renderMany`, `snapcompactFrameCount` → `frames`, `SnapcompactShape` → `Shape`, `SNAPCOMPACT_SHAPES` → `SHAPES`, …).
- Converted every consumer to `import * as snapcompact` member access: `agent/compaction.ts`, `coding-agent` `agent-session.ts`/`session-manager.ts`/`snapcompact-inline.ts`, and all affected tests.
- Renamed internal `geometry` locals to `geo` in `snapcompact.ts` to avoid TDZ collisions with the new `geometry` export.
- Updated `docs/compaction.md` prose and added a Breaking Changes entry to the snapcompact changelog documenting the full rename map.
- Added `renderSnapcompactFrames()` and `snapcompactFrameCount()` to @oh-my-pi/snapcompact for paging arbitrary text into PNG image blocks without dim-marker bookkeeping.
- Widened the agent loop's `transformProviderContext` hook to `(context, model) => Context` so per-request transforms can gate on the dispatch model's capabilities.
- Added `SnapcompactInlineTransformer` rendering the system prompt and large historical tool results as snapcompact frames on vision models: vision gate, per-provider image budgets, 3k-token floor, savings-margin gate, skip-last rule, and hash-keyed render caches swept to live tool calls.
- Added default-off `snapcompact.systemPrompt` and `snapcompact.toolResults` settings under a new Context → Experimental group, composed after secret obfuscation in `sdk.ts` so frames are built per-request and never persisted to session.jsonl.
- Added prompt stubs (`snapcompact-system-stub.md`, `snapcompact-system-frames-note.md`, `snapcompact-toolresult-note.md`) and unit tests covering frame paging, no-mutate guarantees, budget caps, gates, and render caching.
Oversized tool results and arguments are now truncated to keep archives
conversation-dense, and tool output is rendered in dim gray ink on image frames
to visually de-emphasize noise.
All truncation budgets and dimming behavior are configurable.
- Switched render outputs from byte arrays to base64 strings across native and TypeScript surfaces.
- Updated `RenderedFrame` and FFI declarations so `data` is a base64 string and `chars` are exposed.
- Added `SnapcompactSerializeOptions` with truncation, head/tail ratio and tool/arg/call limits.
- Tracked dim-marker state in rendering, reopening spans across chunk boundaries and stripping markers.
- The `snapcompact-summary.md` prompt was removed from `packages/agent` to further centralize `snapcompact`-related concerns within the dedicated `@oh-my-pi/snapcompact` package.
- Introduced `isSnapcompactShape` for runtime validation of `SnapcompactShape` overrides, enhancing data integrity when loading configuration from dynamic sources.
- Updated README and native module comments to reflect the standalone `snapcompact` package structure.
- Added a new @oh-my-pi/snapcompact package and redirected compaction call sites to it.
- Added provider-aware snapcompact shape resolution for model-specific mixed-frame behavior.
- Added optional image detail support by extending ImageContent and passing hints through OpenAI providers.
- Added native snapcompact render options, including 5x8/8x8 font loading and palette/geometry controls.
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