build(deps-dev): bump @anthropic-ai/claude-code from 2.1.259 to 2.1.278

[dependabot]

Bumps @anthropic-ai/claude-code from 2.1.259 to 2.1.278.

Release notes

Sourced from @​anthropic-ai/claude-code's releases.

v2.1.278

What's changed

• Changed auto mode for Claude API and Enterprise users, and on Bedrock, Vertex, Foundry and gateways, to default to the server-side classifier, which does not charge for classifier overhead (CLAUDE_CODE_AUTO_MODE_SERVER=0 opts out on Bedrock, Vertex, Foundry and gateways); warns on billed fallback. See https://code.claude.com/docs/en/auto-mode-classifier-billing
• Added an Auto mode server row to /status showing whether this session's auto mode classifier runs on the server

v2.1.277

What's changed

• Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under "Project instructions" in /config (not yet on Bedrock, Vertex or Foundry)
• Added CLAUDE_GATEWAY_PROXY_IS_EGRESS_BOUNDARY=1 for Claude apps gateways whose only egress is a forward proxy: every outbound request hands the proxy the hostname instead of resolving it locally
• Added an optional headers: map on Claude apps gateway upstreams, to send static headers to a proxy you run in front of a provider
• Added a line saying a background task's update is waiting when it finishes while a panel such as /tasks is open
• Fixed claude -p and Agent SDK sessions that could hang with no result after an internal error; they now report the error and exit with code 1
• Fixed conversations failing every request with "text content blocks must be non-empty" when an earlier assistant turn held an empty text block beside other content, including after --resume
• Fixed being unexpectedly logged out when an older Claude Code build (for example an IDE extension's bundled CLI) runs on the same machine as the current one
• Fixed interactive start-up hanging or showing an error for ANTHROPIC_API_KEY users when ~/.claude.json holds a malformed customApiKeyResponses value
• Fixed update checks erroring every 30 minutes, and claude update hanging when a minimum or maximum version is set, if a proxy returns an invalid version; a malformed minimumVersion is now ignored
• Fixed claude update on winget- or apk-managed installs reporting "up to date" when the version lookup failed
• Fixed claude plugin install sometimes failing and breaking the installed copy when reinstalling a plugin version that a session or another program was using; an unchanged copy is now left alone
• Fixed Grep and Glob reporting no matches when the search could not start because the system was out of processes, memory or file handles; they now return an error saying so
• Fixed the Write tool silently ending the turn as a declined permission when the target path is an existing directory; it now reports a clear error
• Fixed the Edit tool treating an escaped backslash followed by uXXXX text as a \uXXXX escape, which could make an edit of a non-ASCII character rewrite an escaped backslash sequence instead
• Fixed the Edit tool reporting "Invalid regular expression: regular expression too large" instead of "String not found in file" when a very large edit containing non-ASCII text did not match the file
• Fixed a turn ending early with "Path contains null bytes" when a tool call's file path contained \u0000 written as an escape sequence; escaped control characters now stay as literal text
• Fixed background sessions (claude --bg) exiting when a plugin's LSP server exited or closed its stdin
• Fixed a crash ("Type error") when opening /mcp or /plugin manage with a malformed claudeAiMcpEverConnected value in ~/.claude.json
• Fixed a crash at launch when ~/.claude.json holds a malformed theme value
• Fixed a crash ("unrecoverable interface error") when the prompt held text containing terminal color codes, for example a prompt recalled from history or text loaded from the external editor
• Fixed a crash when resuming a session whose saved history holds an assistant message stored as a plain string
• Fixed sessions on slow or heavily loaded machines sometimes exiting with "Claude Code exited after an unrecoverable interface error" when the first spinner appeared
• Fixed a rare case where the screen could stop updating for the rest of the session after an internal rendering error
• Fixed a rare case on Windows where a turn could stop with an error such as "Out of memory" right after Claude replied, so that reply's tool calls never ran
• Fixed sessions continued after /clear (restart, --continue, --resume) missing part of their first message when a SessionStart hook printed output, causing a full prompt-cache miss
• Fixed messages from other agents (such as a subagent's SendMessage) that arrived mid-turn showing up below the "Ran N shell commands" row instead of where they arrived
• Fixed the "copied" notice not appearing after drag-selecting text in the fullscreen /resume picker and other panels that cover the prompt area
• Fixed $TMPDIR expanding empty in Bash commands that run outside the sandbox while sandboxing is enabled
• Fixed WebFetch and WebSearch in Cowork cloud sessions not telling Claude why a request was refused, such as a used-up fetch budget or an admin policy
• Fixed the Claude apps gateway's telemetry relay ignoring a collector hostname or domain listed in NO_PROXY when a proxy is set
• Fixed one malformed strictKnownMarketplaces or blockedMarketplaces entry silently disabling the whole enterprise marketplace policy
• Fixed failed auto-updates leaving large staged downloads behind in ~/.cache/claude/staging
• Fixed /plugin not stripping terminal control characters from messages on the Installed tab, such as the error of a failed plugin update
• Fixed /plugin → Installed and /skills crashing when a skill or legacy command is named like a built-in Object property such as constructor or toString
• Fixed /plugin closing with no message when every install in a multi-select failed
• Fixed uninstalled plugins reappearing as "failed to load" rows in /plugin Installed, and Remove not clearing such a row
• Fixed plugins from the official marketplace being recorded without their commit in installed_plugins.json, and installed_plugins.json keeping the old commit after updating a pinned-commit plugin
• Fixed plugin reload previews keeping every previewed copy of a plugin archive unpacked until exit, and overwriting the cached --plugin-url archive a reload falls back to when its download fails
• Fixed Remote Control session bookkeeping failing when ~/.claude.json holds a malformed placeholder record
• Fixed the error after a revoked claude.ai login blaming an expired Anthropic profile; it now leads with /login
• Fixed typed or pasted text occasionally coming out scrambled in the claude agents dispatch input during key repeat or very fast input

... (truncated)

Changelog

Sourced from @​anthropic-ai/claude-code's changelog.

2.1.278

• Changed auto mode for Claude API and Enterprise users, and on Bedrock, Vertex, Foundry and gateways, to default to the server-side classifier, which does not charge for classifier overhead (CLAUDE_CODE_AUTO_MODE_SERVER=0 opts out on Bedrock, Vertex, Foundry and gateways); warns on billed fallback. See https://code.claude.com/docs/en/auto-mode-classifier-billing
• Added an Auto mode server row to /status showing whether this session's auto mode classifier runs on the server

2.1.277

• Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under "Project instructions" in /config
• Added CLAUDE_GATEWAY_PROXY_IS_EGRESS_BOUNDARY=1 for Claude apps gateways whose only egress is a forward proxy: every outbound request hands the proxy the hostname instead of resolving it locally
• Added an optional headers: map on Claude apps gateway upstreams, to send static headers to a proxy you run in front of a provider
• Added a line saying a background task's update is waiting when it finishes while a panel such as /tasks is open
• Fixed claude -p and Agent SDK sessions that could hang with no result after an internal error; they now report the error and exit with code 1
• Fixed conversations failing every request with "text content blocks must be non-empty" when an earlier assistant turn held an empty text block beside other content, including after --resume
• Fixed being unexpectedly logged out when an older Claude Code build (for example an IDE extension's bundled CLI) runs on the same machine as the current one
• Fixed interactive start-up hanging or showing an error for ANTHROPIC_API_KEY users when ~/.claude.json holds a malformed customApiKeyResponses value
• Fixed update checks erroring every 30 minutes, and claude update hanging when a minimum or maximum version is set, if a proxy returns an invalid version; a malformed minimumVersion is now ignored
• Fixed claude update on winget- or apk-managed installs reporting "up to date" when the version lookup failed
• Fixed claude plugin install sometimes failing and breaking the installed copy when reinstalling a plugin version that a session or another program was using; an unchanged copy is now left alone
• Fixed Grep and Glob reporting no matches when the search could not start because the system was out of processes, memory or file handles; they now return an error saying so
• Fixed the Write tool silently ending the turn as a declined permission when the target path is an existing directory; it now reports a clear error
• Fixed the Edit tool treating an escaped backslash followed by uXXXX text as a \uXXXX escape, which could make an edit of a non-ASCII character rewrite an escaped backslash sequence instead
• Fixed the Edit tool reporting "Invalid regular expression: regular expression too large" instead of "String not found in file" when a very large edit containing non-ASCII text did not match the file
• Fixed a turn ending early with "Path contains null bytes" when a tool call's file path contained \u0000 written as an escape sequence; escaped control characters now stay as literal text
• Fixed background sessions (claude --bg) exiting when a plugin's LSP server exited or closed its stdin
• Fixed a crash ("Type error") when opening /mcp or /plugin manage with a malformed claudeAiMcpEverConnected value in ~/.claude.json
• Fixed a crash at launch when ~/.claude.json holds a malformed theme value
• Fixed a crash ("unrecoverable interface error") when the prompt held text containing terminal color codes, for example a prompt recalled from history or text loaded from the external editor
• Fixed a crash when resuming a session whose saved history holds an assistant message stored as a plain string
• Fixed sessions on slow or heavily loaded machines sometimes exiting with "Claude Code exited after an unrecoverable interface error" when the first spinner appeared
• Fixed a rare case where the screen could stop updating for the rest of the session after an internal rendering error
• Fixed a rare case on Windows where a turn could stop with an error such as "Out of memory" right after Claude replied, so that reply's tool calls never ran
• Fixed sessions continued after /clear (restart, --continue, --resume) missing part of their first message when a SessionStart hook printed output, causing a full prompt-cache miss
• Fixed messages from other agents (such as a subagent's SendMessage) that arrived mid-turn showing up below the "Ran N shell commands" row instead of where they arrived
• Fixed the "copied" notice not appearing after drag-selecting text in the fullscreen /resume picker and other panels that cover the prompt area
• Fixed $TMPDIR expanding empty in Bash commands that run outside the sandbox while sandboxing is enabled
• Fixed WebFetch and WebSearch in Cowork cloud sessions not telling Claude why a request was refused, such as a used-up fetch budget or an admin policy
• Fixed the Claude apps gateway's telemetry relay ignoring a collector hostname or domain listed in NO_PROXY when a proxy is set
• Fixed one malformed strictKnownMarketplaces or blockedMarketplaces entry silently disabling the whole enterprise marketplace policy
• Fixed failed auto-updates leaving large staged downloads behind in ~/.cache/claude/staging
• Fixed /plugin not stripping terminal control characters from messages on the Installed tab, such as the error of a failed plugin update
• Fixed /plugin → Installed and /skills crashing when a skill or legacy command is named like a built-in Object property such as constructor or toString
• Fixed /plugin closing with no message when every install in a multi-select failed
• Fixed uninstalled plugins reappearing as "failed to load" rows in /plugin Installed, and Remove not clearing such a row
• Fixed plugins from the official marketplace being recorded without their commit in installed_plugins.json, and installed_plugins.json keeping the old commit after updating a pinned-commit plugin
• Fixed plugin reload previews keeping every previewed copy of a plugin archive unpacked until exit, and overwriting the cached --plugin-url archive a reload falls back to when its download fails
• Fixed Remote Control session bookkeeping failing when ~/.claude.json holds a malformed placeholder record
• Fixed the error after a revoked claude.ai login blaming an expired Anthropic profile; it now leads with /login
• Fixed typed or pasted text occasionally coming out scrambled in the claude agents dispatch input during key repeat or very fast input
• Fixed a crash ("unrecoverable interface error") when resuming a session whose saved transcript contains a stop hook summary without a well-formed hook list
• Fixed Enter on a selected agent panel row doing nothing when keybindings.json rebinds Enter in the Chat context, for example to chat:queueSubmit

... (truncated)

Commits

• bf7d404 chore: Update CHANGELOG.md and feed.xml
• 92ec78f diff: a docked pane reads the repository before it opens, so it never lands o...
• 2287e5d diff: the first edit opens the pane only from the main loop with checkpointin...
• 6ce37e9 mods/diff: type openPane's answer as unknown so a richer $.ui.open result com...
• 2fc72b2 mods/agents-md: a Read attaches no nested AGENTS.md where the engine attaches...
• f708f4f chore: Update CHANGELOG.md and feed.xml
• ca02e7d chore: Update CHANGELOG.md and feed.xml
• a92ea1c mods/agents-md: the AGENTS.md project-instructions mod (#95409)
• 31a3b00 chore: Update CHANGELOG.md and feed.xml
• 3803596 chore: Update CHANGELOG.md and feed.xml
• Additional commits viewable in compare view

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[github-actions]

Mechanical Dependabot devDependency bump (@anthropic-ai/claude-code 2.1.259 → 2.1.278), package.json/package-lock.json only. One Should-fix: the version-pinned allowScripts approval key wasn't bumped alongside it, so npm 12's lifecycle-script gate silently skips the new version's postinstall script (see inline comment).

Should fix

• package.json:43 — allowScripts still keys off 2.1.259; needs bumping to 2.1.278 to match the new devDependency, or npm 12 silently skips the postinstall script for the version actually installed.

Everything else checks out: the diff is confined to the two lockfile/manifest files, save-exact is respected (no ^/~ introduced), and the PR title/description are already complete (Dependabot's standard build(deps-dev): title and upstream changelog body) — build: is the correct commit type per this repo's own release-level mapping for a no-behaviour-change dependency bump, so I left them untouched.

Not checked: I couldn't run gh pr list (not in this run's allowed tool set) to confirm there's no duplicate open bump PR for the same dependency.

[github-actions]

🗜️ Headroom context compression

Metric	Value
Requests proxied	32
Tokens saved	165826
Aggregate savings	5.5% of all tokens sent
Average per-request compression	7.6%

[dependabot]

Superseded by #114.