Version 2.1.0

Large pasted content is now cached to disk rather than stored inline in session transcripts.

• Content larger than 1KB is stored in a separate paste-cache directory
• Content is hashed (SHA-256, truncated to 16 chars) and stored as individual text files
• Old paste cache files are automatically cleaned up on startup based on age
• This reduces memory pressure and transcript file sizes for sessions with large pastes

OMB() at line 225421, MMB() at line 225432, RMB() at line 225443 (paste storage/retrieval/cleanup, uses "paste-cache" directory)

Git commit attribution trailers are now injected into the commit command before execution, rather than amending commits after the fact.

• Uses PreToolUse hook to intercept git commit commands
• Injects Claude-Generated-By, Claude-Steers, Claude-Permission-Prompts, Claude-Escapes, and Claude-Plan trailers directly into the commit message
• Supports both HEREDOC-style commit messages and quoted -m style messages
• Eliminates race conditions and edge cases from the previous post-commit amendment approach
• Tracks injection state via trailersInjectedForCurrentCommit flag

x$7() at line 530968 (contains "Attribution hook: PreToolUse - Injecting trailers into git commit command")

The claude mcp add command now supports -- to separate the command from its arguments.

claude mcp add myserver -- node server.js --port 3000

• Allows cleaner separation when MCP server commands have their own arguments
• Arguments after -- are passed directly to the server command

ZC9() at line 535512 (contains "--" && Q.length > 0)

Error messages for PDF and image handling now provide context-appropriate guidance based on whether Claude Code is running in SDK mode:

• PDF too large:
• Interactive: "PDF too large. Please double press esc to edit your message and try again."
• SDK mode: "PDF too large. Try reading the file a different way (e.g., extract text with a CLI tool)."

• Password-protected PDF:
• Interactive: "PDF is password protected. Please double press esc to edit your message and try again."
• SDK mode: "PDF is password protected. Try using a CLI tool to extract or convert the PDF."

• Image too large:
• Interactive: "Image was too large. Double press esc to go back and try again with a smaller image."
• SDK mode: "Image was too large. Try resizing the image or using a different approach."

Hi8() at line 278470, Di8() at line 278475, Fi8() at line 278480 (contain d2() SDK mode check)

Sensitive OAuth parameters are now redacted from URLs in logs and error messages for improved security.

• Redacts: state, nonce, code_challenge, code_verifier, code
• Parameters are replaced with [REDACTED] in logged URLs

gB2() at line 296262 (contains Q.searchParams.set(B, "[REDACTED]"))

Enhanced telemetry for tool search mode decisions, providing better observability into when and why tool search is enabled or disabled.

• Logs tengu_tool_search_mode_decision events with reason codes:
• model_unsupported, mcp_search_unavailable, tst_enabled
• auto_above_threshold, auto_below_threshold, mcp_cli_mode, standard_mode
• Includes MCP tool count and threshold information

G70() at line 280942 (contains l("tengu_tool_search_mode_decision")

Added classification of internal file paths for session memory and transcripts, enabling better handling of internal data access.

un8() at line 282585 (returns "session_memory" or "session_transcript")

The shell command parser now properly cleans up tree-sitter AST trees after parsing to prevent memory leaks.

• Calls tree.delete() after extracting pipe positions and redirection nodes
• Pre-extracts needed data before cleanup to avoid use-after-free

Line 1050 in diff: return (Q.tree.delete(), !0); and line 1067: return (G.tree.delete(), new Ww2(A, Z, Y));

Improved terminal focus tracking cleanup on exit, with proper state reset to prevent orphaned event listeners.

Ew0() at line 457322 (contains process.stdout.write("\x1B[?1004l"), Fw0 = !1)

Added explicit cache clearing when resetting application state, improving memory management.

mD1() at line 467837 (contains hV.cache.clear?.() and multiple other cache clears)

• Fixed potential memory leak in tree-sitter shell parser by properly deleting AST trees after use (Ww2 class at line 370359)
• Fixed terminal focus mode not being properly disabled on exit in some cases (Tt2() at line 457328)

The holiday promotion banner displaying "A gift for you - Your rate limits are 2x higher through 12/31" has been removed as the promotion period has ended.

Removed function re2() at line 460646, vw0() at line 460649 (contained "tengu_year_end_2025_campaign_promo")