- Introduce `@oh-my-pi/omptype` as a new ArkType-compatible schema validation package featuring a lazy JIT runtime, JSON Schema emission, and compatibility adapters.
- Replace `arktype` across workspace packages and test utilities with `@oh-my-pi/omptype`.
- Add benchmark suites, tests, and documentation for the new validation engine and adapters.
- Update workspace build, test runner, and release configurations to include the new package.
- Update hashline block resolution formatting to correctly incorporate anchor lines within operation labels.
- Fix and update test assertions and mock contexts across coding agent tests.
- Replaced legacy `SWAP`, `INS`, and `PASTE` commands with unified `PUT` and `CUT` hunks across parser, grammar, tokenizer, and test suites.
- Added support for named registers and span paste operations in clipboard and block execution logic.
- Implemented indentation repair and enhanced gap locator formatting for improved patch resilience.
- Updated documentation, system prompts, and session analysis scripts to reflect the new syntax and header shapes.
- Updated `hashline` test expectations to match new recovery message strings.
- Initialized settings in `interactive-mode-status` tests to prevent state leakage.
- Added ANSI color code verification to `launch` tool tests to align with updated output.
- Cleaned up whitespace in `tan-context-switch.md` system prompt.
- Added `normalizeSingleStringField` to dynamically map misplaced string inputs to required schema fields for single-argument tools.
- Integrated argument normalization into `validateToolArguments` to handle model-specific variations in JSON payloads during validation passes.
- Updated `coding-agent` streaming and rendering components to recognize `_input` as a legacy alias for `input` across various UI paths and logic flows.
- Refactored `hashlineEditParamsSchema` to strictly enforce the `input` field while maintaining support for legacy aliases via runtime coercion rather than schema definition.
- Corrected unit tests to reflect that `_input` is rejected by the strict schema but handled gracefully by the validation layer.
- Automatically rebind edits to the correct file when an authored path does not exist but the filename and snapshot tag uniquely match a file read earlier in the session.
- Prevent path recovery for paths that would escalate write privileges, ensuring compatibility with read-only internal URL targets.
- Surface warning messages to the model and user upon successful path recovery to encourage correct future path usage.
Migrate 203 test files (356 call sites) from fs.rm/fs.rmSync to
removeWithRetries/removeSyncWithRetries to reduce EBUSY test failures
on Windows. removeWithRetries is now exported from @oh-my-pi/pi-utils.
The migration uses a regex-based approach that:
- Replaces fs.rm(path, { recursive, force }) → removeWithRetries(path)
- Replaces fs.rmSync(path, { recursive, force }) → removeSyncWithRetries(path)
- Replaces fs.rm(path) → removeWithRetries(path) (no options)
- Skips fs.rm/fs.rmSync inside template literals (bun --eval scripts)
- Adds imports to existing @oh-my-pi/pi-utils import or creates new one
- Removes unused fs imports where fs.rm was the only fs usage (4 files)
- Migrated all wire protocol, schema definitions, and tools validation from Zod to ArkType across multiple packages.
- Updated extension runtimes, custom tools loader, and TypeBox compatibility shim to expose and use ArkType instances.
- Added a comprehensive ArkType migration guide, validation parity tests, and helper utilities.
- Removed redundant PDF asset routing and parsing implementations from the read tool.
- Removed the mid-skip placeholder line that was output when skipping lines in the middle of a diff, relying instead on the line number jump to convey the gap. Removed the corresponding placeholder-filtering logic from the hashline diff preview that was handling these placeholders.
- Modified buildCompactDiffPreview to omit removed lines from output while preserving removal counts for offset tracking.
- Added logic to collapse long contiguous added runs with +<lineNum>... elision marker, keeping configurable edge lines on each side via new maxAddedRunContext option.
- Removed context-gap placeholder rows (... or ...) from model-facing preview, relying on line-number jumps to convey elision.
- Reorganized test suite by moving core contract tests to dedicated core-contracts.test.ts file and diff-preview tests to diff-preview.test.ts for better separation of concerns.
- Replace recursive stripLeadingHashlinePrefixes with single-pass
stripOneLeadingHashlinePrefix in #handleRaw to prevent over-stripping
content whose own text starts with digits:colon (e.g. YAML ports,
timestamps: 2:42:hello → 42:hello, not hello)
- Export stripOneLeadingHashlinePrefix from prefixes.ts
- Move hashline CHANGELOG entry to [Unreleased] section
- Add regression tests for nested N: prefix and +N: asymmetry
- Replaced `¶path#hash` prefix with `[path#hash]` delimiters across parser, tokenizer, and grammar.
- Updated prompts, docs, and recovery paths to the new bracketed form.
- Updated the grammar to parse replace hunks with zero body lines.
- Changed empty replace execution to emit delete edits across the target range.
- Updated tests to verify empty replace syntax deletes lines while empty inserts still throw errors.
- Added formatContextUsage to render context as `%/window` with `?` fallback across status and task views.
- Updated task renderCall to show dispatched agents as tree entries with `Tasks (2)` header and `#3` fallback.
- Capped task preview collapse at 12 entries and added `... N more agents` overflow messaging.
- Replaced hard-coded dot separators with `theme.sep.dot` in subagent cost and context output.
- Added tests for streaming task preview rendering and updated nested-live expectations for percent/context output.
- Rejected file creation via hashline and directed to write tool instead.
- Required snapshot tag in duplicate insert test setup.
- Added "irc" to expected subagent LSP tool names.
- Replaced snapshot internals with full-file records and removed contiguous/sparse snapshot APIs.
- Added file-hash normalization, computed `computeFileHash`, and updated grammar/messages to 4-hex tags.
- Simplified recovery by checking whole-file hashes first, then applying merge-replay fallback after mismatches.
- Updated coding-agent tools to use `record`/`recordFileSnapshot` and skip hash headers for unsnapshotted large files.
- Expanded patcher and snapshot tests to verify 4-hex anchors, hash deduplication, and cache-capped behavior.
- Replaced bare `A B` range headers with `replace N..M:`, `delete N..M`, `insert before N:`, `insert after N:`, `insert head:`, and `insert tail:`.
- Removed `&A..B` repeat rows; insert-before/after ops now express the same intent explicitly.
- Empty replace bodies now error instead of deleting; `delete` is the canonical deletion op.
- Updated grammar, prompt, docs, tests, and all call sites to the new syntax.
- Replacement hunks now drop duplicated closing delimiters restated in the payload but surviving just outside the range.
- Ranges that swallow a structural closer the payload omits now spare that closer instead of deleting it.
- Each repair surfaces a `delimiter-balance` warning through `ApplyResult.warnings`.
- Brackets inside strings, template literals, and comments are skipped to avoid false positives.
- Rejected bare `A` anchors; single-line ranges must now be spelled `A A`.
- Added a descriptive error for single-number headers to guide model output.
- Updated grammar, tokenizer, prompt docs, and tests to reflect the change.
- Redesigned hashline patch syntax from anchor-based (`A-B:`) to hunk-header format (`@@ A..B @@`) with unified-diff compatibility.
- Removed `autoDropPureInsertDuplicates` option and simplified apply behavior to preserve duplicated boundary and context lines.
- Changed repeat operator from `^A-B` to `&A..B` and range separator from `-` to `..` for consistency with hunk-header syntax.
- Added image resizing and dimension notes to eval tool output; improved write tool hashline header sanitation for legacy formats.
- Removed 521 lines of boundary-duplicate absorption code and simplified parser to auto-convert bare body rows and unified-diff contamination.
- Replaced 4-hex content-derived file hashes with 3-hex opaque tags minted by InMemorySnapshotStore, making tags session-bound pointers rather than content fingerprints.
- Removed lru-cache dependency; replaced LRU-bounded per-path rings with a flat 4096-slot global ring using a scrambled permutation to prevent LLM tag extrapolation.
- Made SnapshotStore required in Patcher (was optional); tag resolution now drives stale-anchor detection instead of recomputing hashes at apply time.
- Changed literal payload sigil from `|` to `+` and accepted `^A` shorthand for `^A-A`; added lenient recovery for bare bodies, lone `-` rows, and overlapping bare/concrete block pairs.
- Replaced anchor shorthand syntax with explicit range format (1: -> 1-1:) and removed ^/v sigils in favor of ^A-B repeat and A-B:- delete operations.
- Added repeat edit kind to support ^A-B syntax for copying lines A through B, and inline delete syntax A-B:- for range deletions.
- Removed after_anchor cursor kind and standalone delete rows; empty anchor blocks now produce blank-line replacements instead of deletions.
- Updated parser, tokenizer, and type system to discriminate literal and repeat payloads, and refactored apply/recovery logic to expand repeat edits into individual inserts.
- Updated coding-agent test fixtures and settings documentation to reflect new hashline syntax and behavior.
- Narrowed the xai-oauth bundled model cast to `Model<"openai-responses">` in its regression test.
- Changed hashline stale-recovery fixtures to use `repl(...)` for both line-replacement payloads instead of `extra(pl(...))`.
The recovery fallback that replays edits onto current text when the structured-patch 3-way merge refuses guarded only on line-count equality. If a prior in-session edit rewrote the very line a later stale-hash edit re-targets, replay overwrote the new content with the stale-anchored payload and emitted a 'Verify the diff matches your intent' warning that does not block the write.
Concrete window: v0 line 5 = 'L5', v1 = 'L5-CHANGED' (same line count). Edit E2 authored against H0 anchored at line 5 lands on v1 because the line-count gate passes, silently replacing L5-CHANGED with the model's L5-MODEL.
Add a verifyAnchorContent gate: walk every edit's anchors and require previousText[line] === currentText[line]. Any mismatch returns null so the caller raises MismatchError and the model re-reads. The success path now emits the standard RECOVERY_SESSION_CHAIN_WARNING (the hedged REPLAY_WARNING text was only sensible when content was partially aligned; that case is now unreachable, and the constant is removed).
Tests: packages/hashline/test/recovery-session-chain.test.ts pins both the corruption refusal and the safe-replay positive case (anchor on an unchanged line, 3-way merge fails on neighbouring rewritten context, replay succeeds with the standard chain warning). packages/coding-agent/test/core/hashline.test.ts adds an end-to-end through executeHashlineSingle so the production patcher path is covered too.
- Replaced `LINE↑`/`LINE↓`/`A-B:` op sigils with unified `A-B:` anchor + `|`/`↑`/`↓` payload sigils.
- Added `mode: "replacement"` tag to insert edits so the applier distinguishes replace-bucket from insert-bucket lines.
- Removed lenient fallbacks (implicit continuation, inline payload acceptance, escaped delimiter stripping).
- Updated grammar, prompt, tokenizer, parser, applier, and messages to match the new format.
- Removed `path` field from hashline input parameters and function signatures across diff, execute, and params modules.
- Updated HashlinePatch.parse() calls to omit the path option, relying on the ¶PATH#HASH header in input instead.
- Removed unused warning tracking for escaped payload delimiters in hashline parser.
- Added detection and stripping of extra backslashes before indented payload rows, which models often emit when JSON-escaping the delimiter.
- Added `_input` field alias support in hashlineEditParamsSchema to accept provider-emitted variants.
- Added warning message for escaped payload delimiter acceptance to guide users toward canonical syntax.
- Modified scanInlineBody to strip the payload prefix when present at the start of inline content.
- Added test cases covering backslash-delimited payloads in insert, delete, and replace operations.
- Updated the payload continuation syntax to use backslash (`\`) instead of plus (`+`) as the explicit prefix for multi-line payloads and blank lines.
- Modified grammar, format constants, parser comments, and all documentation and test cases to reflect the new syntax.
- This is a breaking change for existing hashline patches using the `+` prefix.
- Removed the `!` delete sigil and all associated parsing, validation, and tokenization logic. The delete operation is no longer a supported edit kind.
- Updated grammar, format constants, and error messages to reference only insert and replace operations.
- Simplified the executor's overlap validation to handle only replace operations.
- Parser now buffers markdown-style `#` lines and skips them when they directly precede a hashline operation.
- It now preserves comment lines that are not immediately before an operation while still handling blank separators as regular raw input.
- Added focused parser tests plus prompt and changelog updates describing the new comment-skipping behavior.
- Simplified `renderSection` output assembly in hashline execution to stop injecting a separate headline.
- Removed conditional headline generation that prefixed create/update/status text before the header.
- Returned tool results containing only header, preview, and warnings content blocks.
- Preflighted write policies for all sections before any commit in multi-section batches.
- Rejected duplicate canonical targets (e.g., `a.ts` and `./a.ts`) before writes begin.
- Fixed `after_anchor` normalization mutating cached edits across repeated patch applications.
- Fixed `detectLineEnding` to use first-occurrence style instead of majority vote.
- Added a dedicated @oh-my-pi/hashline package with parser, patcher, filesystem, snapshots, and release metadata.
- Migrated coding-agent hashline and stream entrypoints to @oh-my-pi/hashline and removed old hashline module exports.
- Changed multi-section hashline execution to validate section hashes and flush diagnostics only at the final commit.
- Added session fileSnapshotStore support and rewired edit/read/search/write tools to use it instead of fileReadCache.
- Removed inline_body from grammar; op sigils (↑, ↓, :) now accept no trailing content.
- Executor emits INLINE_PAYLOAD_ACCEPTED_WARNING when legacy inline form is encountered but still applies the edit leniently.
- Updated prompt docs and all tests to use bare op + `+`-prefixed continuation rows.
- Changed unprefixed continuation lines from a hard error to accepted implicit payload with a warning.
- Demoted inner `LINE:TEXT` ops whose anchors fall inside a pending `A-B:` block to payload continuation lines instead of raising an overlap error.
- Added `IMPLICIT_CONTINUATION_WARNING` and `PAYLOAD_LINE_PREFIX_DEMOTED_WARNING` constants for both new lenient paths.
- Changed multiline payload syntax so continuation lines must start with `+`; that prefix is stripped before writing.
- Raw unprefixed lines after an op now throw an error instead of being silently accepted as payload.
- Removed `PAYLOAD_LINE_PREFIX_DEMOTED_WARNING` and the nested-replace demotion path; inner `N:` ops inside a pending `A-B:` now raise an overlap error.
- Raw blank lines between ops are ignored; use `+` alone for an empty payload line.
- Handled an inner `replace` op that appears inside a pending multiline `A-B:` block by appending its body to the outer payload and preserving `LINE:`/`A-B:` body content as continuation.
- Retained same-range replace-pair coalescing while adding a warning when nested replace anchors are demoted from op markers to payload lines.
- Added hashline tests for nested payload demotion behavior, expected warnings, and non-demoted out-of-range `N:` replacements.
- Single-line pure-insert duplicates are ambiguous (e.g., `N↓}` may be an anchor echo or an intentional delimiter), so single-line absorb logic was removed.
- Multi-line context echo absorption is unchanged; still gated on `autoDropPureInsertDuplicates`.
- Updated tests to expect literal output for previously auto-dropped single-line cases.
- Changed identical `A-B:` duplicate ops to last-wins coalesce with a warning, fixing spurious anchor-conflict errors when models emit before/after pairs.
- Non-identical overlap shapes (different ranges, replace+delete, delete+delete) still throw.
- Added new file hash line to edit tool result output after successful apply.
- Removed `href`, `hrefr`, and `hline` Handlebars helpers along with shared hashline anchor state; unused by any template.
- Changed blank lines between ops from silent separators to literal payload lines appended to the open op.
- Added overlapping-delete validation to reject before/after-block patch patterns.
- Simplified hashline prompt doc, removing template-helper examples and tightening rules.
- Added non-structural single-line prefix and suffix duplicate checks for `A-B:` replacement ranges.
- Gated the new boundary absorber behind `autoDropPureInsertDuplicates` and integrated it with existing structural and multi-line hashline absorption logic.
- Updated hashline schema documentation, prompts, and tests, and recorded the behavior change in the changelog.
- Updated hashline parser tests to use inline payload syntax (e.g., `tagvpayload` instead of `tagv\npl(payload)`).
- Removed deprecated test cases for bare-blank-line and explicit-blank-payload syntax.
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