docs: update Claude Code documentation

Author: github-actions[bot]

README.md

@@ -28,7 +28,7 @@
 
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-> **Last docs pull:** <!-- LAST_UPDATED -->2026-03-16 22:15 UTC / 15:15 PT / 18:15 ET / 23:15 CET / 03:45+1 IST / 07:15+1 JST<!-- /LAST_UPDATED -->
+> **Last docs pull:** <!-- LAST_UPDATED -->2026-03-16 23:12 UTC / 16:12 PT / 19:12 ET / 00:12 CET / 04:42+1 IST / 08:12+1 JST<!-- /LAST_UPDATED -->
 
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claude-code-docs/env-vars.md

@@ -26,6 +26,7 @@ Claude Code supports the following environment variables to control its behavior
 | `BASH_DEFAULT_TIMEOUT_MS`                      | Default timeout for long-running bash commands                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
 | `BASH_MAX_OUTPUT_LENGTH`                       | Maximum number of characters in bash outputs before they are middle-truncated                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
 | `BASH_MAX_TIMEOUT_MS`                          | Maximum timeout the model can set for long-running bash commands                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
+| `CLAUDECODE`                                   | Set to `1` in shell environments Claude Code spawns (Bash tool, tmux sessions). Not set in [hooks](/en/hooks) or [status line](/en/statusline) commands. Use to detect when a script is running inside a shell spawned by Claude Code                                                                                                                                                                                                                                                                                                                                                                            |
 | `CLAUDE_AUTOCOMPACT_PCT_OVERRIDE`              | Set the percentage of context capacity (1-100) at which auto-compaction triggers. By default, auto-compaction triggers at approximately 95% capacity. Use lower values like `50` to compact earlier. Values above the default threshold have no effect. Applies to both main conversations and subagents. This percentage aligns with the `context_window.used_percentage` field available in [status line](/en/statusline)                                                                                                                                                                                      |
 | `CLAUDE_BASH_MAINTAIN_PROJECT_WORKING_DIR`     | Return to the original working directory after each Bash command                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
 | `CLAUDE_CODE_ACCOUNT_UUID`                     | Account UUID for the authenticated user. Used by SDK callers to provide account information synchronously, avoiding a race condition where early telemetry events lack account metadata. Requires `CLAUDE_CODE_USER_EMAIL` and `CLAUDE_CODE_ORGANIZATION_UUID` to also be set                                                                                                                                                                                                                                                                                                                                    |