- Condensed prompt documentation throughout by removing articles, auxiliary verbs, and redundant explanations for improved clarity and conciseness.
- Simplified system prompts by replacing multi-line explanations with terse, semicolon-separated fragments and removing verbose motivational language.
- Reformatted tool documentation to use abbreviated language, removing 'the', 'a', and 'is' throughout for more direct technical writing.
- Removed blank lines and consolidated spacing in prompt files to reduce vertical whitespace and improve document density.
- Extracted tool choice mapping logic into dedicated utility module for provider-specific format conversions.
- Refactored task summary generation to use template-based rendering instead of string concatenation.
- Migrated system prompt generation to use Handlebars templates with structured data instead of hardcoded strings.
- Extracted JTD to TypeScript conversion logic into dedicated utility module for schema documentation.
- Consolidated prompt template rendering across multiple modules using unified renderPromptTemplate function.
- Simplified type assertions in stream module to use generic OptionsForApi type instead of provider-specific types.
- Added session compaction auto-continue feature that automatically sends a synthetic continuation prompt after compaction completes when enabled in settings.
- Added tool output pruning system that intelligently removes verbose tool outputs from session history during compaction to reduce token usage while preserving critical information.
- Added short summary generation for compaction results, providing concise PR-style summaries of conversation changes alongside full summaries.
- Added session.compacting extension hook that allows extensions to customize compaction prompts, add context, and preserve metadata during summarization.
- Added synthetic message support to mark system-injected messages (like auto-continue prompts) and prevent them from being persisted to editor history.
- Plan mode provides structured workflow where agents propose plans for user approval before execution.
- Added plan:// internal URL protocol for accessing plan files and injecting plan-mode context into subagent prompts.
- Added plan mode toggle shortcut and paused status indicator in status line.
- Fixed plan reference injection to properly pass workflow state to plan-mode system prompts.
- Improved autocomplete fuzzy matching to support subsequence matching for skill suggestions.
- Added format-prompts script for standardizing prompt file formatting across the codebase.
- Updated system prompt tags from `<required>`/`<antipatterns>` to `<important>`/`<avoid>` for clarity.
- Enhanced prompt formatting by removing blank lines after colons and around blocks for consistency.
- Standardized whitespace handling across all prompt files to improve readability.
- Removed rulebook tool and migrated rules loading to use read tool instead.
- Reorganized prompt files into subdirectories: agents/, compaction/, and system/.
- Added Handlebars helpers for template rendering including list, join, table, codeblock, xml, when, pluralize, and arithmetic operations.
- Migrated prompt template rendering from simple string replacement to Handlebars-style templating with structured data objects.
- Refactored system prompt generation to pass structured data instead of pre-formatted strings.
- Removed rulebookRules property from ToolSession interface and updated all test files accordingly.
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