- Centralized PNG conversion behind an async boundary so constructor and encoder throws become promise rejections.
- Kept live and restored Kitty image rendering interactive by omitting failed conversions.
- Added regressions for both tool-result render paths.
Fixes#7160
While a provider error is pinned in the banner above the editor the inline transcript block is suppressed, so the prior guard skipped re-rendering on Ctrl+O and the full body stayed unreachable until the next turn.
- Track whether the message carries a truncatable error regardless of pinning, so setExpanded re-renders while pinned.
- Render the inline error block in full when expanded even while pinned; keep it suppressed only while pinned and collapsed.
- Disable the streaming fast path whenever the inline error block is drawn.
Fixes#6555
Turn-ending provider errors rendered inline through
AssistantMessageComponent#appendErrorBlock, capped at 8 lines with no
setExpanded method, so isExpandable filtered the component out of the
Ctrl+O tool-output expansion and the truncated tail was unreachable in
the live TUI (full text was persisted but not shown).
- Add setExpanded to AssistantMessageComponent; when expanded the error
block renders the full body (tabs replaced, blank lines preserved,
Text word-wraps to width).
- Collapsed view appends a dim "+N more lines (Ctrl+O to expand)" hint so
the truncation and its remedy are discoverable.
- Only re-render on toggle when the last render produced a truncatable
error block, so expansion skips ordinary turns.
Fixes#6555
- Added `LIVE_DELEGATION_MESSAGE_TYPE` constant and delegation message handling for voice sessions.
- Implemented turn-based transcript coalescing with user and assistant turn counters.
- Added transcript display row with normalized rendering in the live visualizer.
- Refactored controller to send delegation messages via `sendCustomMessage` with configurable frame styling.
- Removed microphone permission error reporting from silence detection logic.
- Normalized completed image_generation_call results into assistant image blocks.
- Persisted image bytes through the session blob store and rendered them in live, replay, ACP, proxy, telemetry, and HTML paths.
- Added response normalization, persistence, and TUI rendering regressions.
Fixes#4768
- Enforced strict history protection by gating ephemeral block removal on uncommitted state across controllers and UI components.
- Optimized settled-row calculations using explicit mermaid fence detection and improved scrollback integrity.
- Refactored transience management to target only actively streaming blocks, preventing redundant label rendering.
- Implemented persistent compaction for auto-retry errors and enabled consistent terminal title updates during session renaming.
- Introduced an automated retry recovery system to track, manage, and persist recovered error states within agent sessions.
- Enabled compact transcript rendering for recovered auto-retry errors by removing heuristic commit machinery.
- Improved raw read tracking and provenance in the ReadTool to support refined file snapshot recording and hashline editing.
- Excluded recovered assistant messages from default model context and updated event controllers to handle retry recovery life cycles.
Ports only the thinking double-format fix: resolveThinkingDisplay reuses block.thinking when rawThinking is set (buildDisplayMessage already formatted it), plus a single-entry memo in formatThinkingForDisplay and a rawThinking regression test. The PR's incremental reveal slicing is superseded by the already-merged #3848 (memoized grapheme slicing).
Three changes to the streaming text-reveal path (the 30fps typewriter animation during model streaming), cutting real per-tick render CPU ~2.3x (measured ~73ms -> ~31ms to animate a 12k-char response; ~1.35ms -> ~0.57ms per tick).
- streaming-reveal: incremental grapheme slicing. BlockUnitCounter.slice resumes segmentation from the cached boundary cluster each tick instead of re-segmenting the whole revealed prefix (O(delta) vs O(revealed)). Handles fixed-text catch-up and append-only live streaming via startsWith + boundary-cluster re-segment.
- assistant-message: fix the transient flag dropped on the fast path. #tryFastPathUpdate(message) was called without opts, so streaming updates always set Markdown.transientRenderCache=false, running code syntax highlighting + L2 cache-key work every tick. Now passes opts through; highlighting applies once at message finalization.
- markdown: render-prefix cache for transient renders. Caches content lines (render+wrap+margin) for the stable streaming-lex prefix tokens [0..frozenCount-2] and re-renders only the changed tail each tick. Byte-identical to the full pipeline (OSC66 margin state resets per token; nextTokenType boundary handled; content-identity guard).
Correctness: byte-identity verified (transient split == full render across 57 reveal steps); BlockUnitCounter.slice verified against a pure Intl.Segmenter reference across fixed/append/cluster-extend/ZWJ-merge/shrink/replace/fuzz cases. Regression tests added in both packages.
- Migrated 288 lines of scattered error classification logic from `utils/error-id.ts` into a cohesive `packages/ai/src/error/` module with 13 specialized submodules covering flags, classes, OAuth, providers, rate-limiting, and finalization.
- Replaced 100+ generic `Error` throws across 60+ provider and registry files with semantic `AIError.*` classes (e.g., `AIError.MissingApiKeyError`, `AIError.OAuthError`, `AIError.ProviderResponseError`), improving error diagnostics and retry logic.
- Consolidated error utility imports from `pi-utils` and scattered classification functions into a single `AIError` namespace, reducing coupling and simplifying error handling across all packages.
- Added a `proseOnlyThinking` configuration setting to suppress raw code blocks in AI thinking traces.
- Implemented `formatThinkingForDisplay` utility to replace code blocks with ellipses in the UI.
- Integrated runtime toggling and live refreshing of message components via streaming reveal controllers.
- Added a live tokens-per-second indicator to the assistant thinking pulse.
- Verified logic with new unit and integration tests for thinking block presentation.
- Added a windowed `SpeedTracker` to report average tokens-per-second during reasoning streams.
- Updated thinking animation from a dot pulse to a starburst effect with a dynamic speed badge.
- Engineered badges to fade from gray to accent color based on streaming throughput.
- Implemented automatic badge suppression during streaming lulls or for providers without live usage reporting.
- Added session-wide reset logic to prevent rate leaking between consecutive message turns.
- Replaced regex-based markdown detection with a stateful parser in `detectLiveReflowingMarkdown`.
- Correctly ignore table delimiters and mermaid markers when they appear inside fenced code blocks.
- Added tests to verify that code blocks containing markdown-like syntax do not prevent commit stability.
- Prevent object reference sharing between agent snapshots and stream events by deep-cloning tool-call arguments.
- Stabilize GFM tables and Mermaid diagrams during streaming by delaying transcript block commits until content finalization.
- Implement session resume safety to prevent crashes when working directories are missing.
- Add comprehensive test suites to verify streaming commit stability and immutable snapshot isolation.
- Implemented `detectCacheInvalidation` to identify when model requests lose their prompt cache.
- Added `CacheInvalidationMarkerComponent` to display a slim notice above affected assistant turns.
- Updated `ChatTranscriptBuilder` and `EventController` to track session usage and inject markers dynamically.
- Included comprehensive test coverage for invalidation detection logic and UI rendering.
- Updated the assistant-message thinking animation to cycle through rising block glyph frames.
- Updated the accompanying comment to describe the new block-based pulse motion.
Render a breathing dots pulse (·‥…‥) in place of a hidden thinking block while the model is actively reasoning, so streaming progress is visible with hideThinkingBlock enabled. The pulse shows only while the block is live (not finalized), thinking is hidden, no tool call has started, and the tail block is thinking; it yields to streamed text and is removed when the block is sealed.
- Canonicalized assistant and thinking messages by trimming and collapsing dot text.
- Skipped rendering assistant and thinking blocks when canonicalized content was empty.
- Filtered ACP thinking notifications and session outputs to ignore placeholder content.
- Added canonicalizeMessage tests for undefined, blank, whitespace, and dot-only inputs.
With display.showTokenUsage on, the usage row was rendered inside the
assistant block above the turn's tool blocks. Finalizing the assistant
block was therefore deferred, and the late append recommitted the
already-committed tool rows, duplicating them in scrollback (worst with
parallel tool calls).
The assistant block now always finalizes as soon as a tool-call appears,
and the usage row is emitted as a standalone finalized block below the
turn's tool blocks across all three render paths (live event-controller,
transcript rebuild, agent-hub). The now-dead setUsageInfo/#usageInfo path
on AssistantMessageComponent is removed.
- Replaced queued-message interrupt flow with session abort calls on empty submit and escape.
- Removed interrupting state and notifyInterrupting teardown paths from abort handling.
- Updated AgentSession queue operations to use shared steering and follow-up queue views.
- Propagated isAborting through session state and collab payloads to suppress late updates.
- Filtered dot-only or blank thinking blocks so they no longer render as assistant thought.
- Adjusted assistant-message and streaming-reveal logic to use visible-thinking helpers for consistency.
- Recomputed `tools.discoveryMode: "auto"` in the deferred MCP closure in `sdk.ts` once the real tool count is known: a toolset crossing the threshold now flips discovery on, registers and activates `search_tool_bm25`, and skips `activateAll` instead of force-activating every MCP tool.
- Guarded the deferred MCP task against disposed sessions: added `AgentSession.isDisposed` and `enableMCPDiscovery()`, and the late connect now calls `disconnectAll()` instead of refreshing tools onto a dead session.
- Cleared `#fastPathKey`/`#fastPathItems` in `AssistantMessageComponent.invalidate()` so theme/symbol changes rebuild reused Markdown children instead of keeping stale captured themes.
- Memoized unusable read summaries as a `false` sentinel in `read.ts` so the per-session LRU no longer retains full sources of unsummarizable files.
- Broadened `HAS_REF_DEF` in `markdown.ts` to match backslash-escaped reference labels (`[a\]b]: x`) and cleared frozen stream-lex state on blank `setText()`.
- Added regression tests: deferred auto-discovery flip and mid-connect dispose (`sdk-mcp-auto-discovery.test.ts` + `many-tools-mcp.ts` fixture), fast-path child rebuild on invalidate, and escaped-ref-def incremental-lex equivalence.
- Added transcript and assistant block version tracking for finalized segments.
- Changed committed block reuse logic to require prior finalization and same version.
- Fixed rerendering of committed finalized blocks when version values changed.
per-block grapheme counts cached (blocks only grow) and in-flight partials bypass the markdown render LRU, removing repeated full Intl.Segmenter walks per 33ms tick and retained stale partial snapshots on long replies.
- Defer MCP server discovery off the first-paint critical path for UI
sessions; tools and slash commands stream in through the existing
live-refresh channel once each server connects (non-UI modes keep the
blocking path). ~290ms off first paint with MCP servers configured.
- Build the model catalog's canonical-equivalence index lazily on first
read instead of eagerly in the ModelRegistry constructor. A default
interactive launch never reads it pre-paint, moving the ~210ms build
(over ~3,200 models) off the critical path: ~244ms (~16%) off cold boot.
- Memoize per-session read summaries (tree-sitter parse) on the content
hash of the freshly-read bytes; the file is still read fresh each call
so results stay correct. Repeat same-file summary read 17ms -> 2.4ms.
- Reuse the Markdown subtree across streaming reveal ticks, memoize
grapheme counting, and stop re-highlighting finalized thinking blocks.
- Attribute the previously-unlabeled synchronous boot region in the
PI_TIMING table and add a bench:guard boot-regression target.
- Dropped blank lines, capped at 8 lines, and width-truncated each line so a proxy 502's HTML body can't flood the transcript.
- Mirrored the pinned error banner's preview behavior; full text still kept in the persisted session.
- Added `isUserInterruptAbort` and `shouldRenderAbortReason` helpers so interrupt handling can distinguish Esc-based aborts from other abort reasons.
- Updated assistant transcript rendering to suppress the `Interrupted by user` line while continuing to show generic or other abort labels.
- Updated plan-review and transcript container tests to assert interrupted assistant messages no longer render the redundant interrupt line.
- Computed live commit state from render diffs and drove native scrollback via safeLength.
- Fixed volatile live tool rows committing only after stream finalization in native scrollback.
- Stored append-only and volatile flags in FrozenRender snapshots for live-row tracking.
- Removed append-only streaming predicates from assistant and tool rendering paths.
- Added optional `reason` parameters to `Agent.abort` and `AgentSession.abort` APIs.
- Passed abort reasons through interrupt flows into underlying agent cancellation.
- Replaced hard-coded abort text with `resolveAbortLabel` for streaming and replayed messages.
- Fell back to generic `Request was aborted` text when no abort reason was provided.
- Centralized transcript spacing by stripping blank edges and inserting separators.
- Removed per-component leading spacers and empty placeholders that added extra gaps.
- Introduced TranscriptBlock grouping so related outputs render as single transcript children.
- Updated transcript-related tests to validate one-row block separators and blank-line trimming.
- Updated EventController to keep foreground render mode active from agent_start through agent_end so live-region rebuild remains enabled during a turn.
- Pinned stop-reason assistant errors to the editor banner and suppressed the transcript's inline Error line while pinned, then restored it on the next agent_start.
- Added tests covering error-banner suppression/restoration and eager native scrollback rebuild ordering before loading animation.
- Fixed assistant transcript blocks to expose append-only commit-safe boundaries.
- Updated TUI live-region commit and pinned-paint logic to clamp commit-safe ends.
- Fixed long streamed assistant replies to remain in native scrollback on overflow.
- Cleared native scrollback on `omp`/`omp -c` so the resumed transcript no longer stacks on the prior run's welcome screen.
- Tracked assistant block finalization so aborted streaming messages stay repaintable when status rows land beneath them on ED3-risk terminals.
- Removed the AssistantMessageComponent completion flag and its stable-line counting helpers.
- Added a TUI regression test validating that reflowed streaming rows leaving the viewport are preserved in native scrollback and remain reachable.
- Removed changelog notes for obsolete stable-prefix scrollback APIs.
- Marked steering user messages and wrapped them pre-LLM so the model sees a `` envelope.
- Kept transcripts and persisted history with the user's original raw text.
- Restored `AssistantMessageComponent` stable-prefix completion API.
- Added assistant-message completion state and stable-line count reporting.
- Added transcript stable-row aggregation and snapshot replay to keep unstable rows out of scrollback.
- Added TUI stable scrollback boundary APIs and stable-prefix commit path.
- Added regression tests proving unstable rows stay out of scrollback until stabilized.
- Added `ImageBudget` keeping only N recent images live, demoting older ones to text via a full redraw plus Kitty graphics purge.
- Changed Kitty images to transmit-once + placement, so repaints re-send only tiny placement sequences instead of base64.
- Added `tui.maxInlineImages` setting (default 3, 0 disables) wired through the coding-agent renderers.
- Raised the Bun minimum version to >=1.3.14 across package metadata, install scripts, and changelog notes.
- Removed the Photon native image pipeline and added SIXEL-based `sixel` support in pi-natives.
- Migrated coding-agent image handling and resizing to `Bun.Image`, including updated tests and a JPEG quality bump to 80.
- Added HTTP/2 fetch bootstrap with HTTPS-only fallback and updated Bun build flags for autoload suppression/`--keep-names`.
can1357