* fix(cli): honor AGENT_BROWSER_DEFAULT_TIMEOUT env var for wait commands
The `AGENT_BROWSER_DEFAULT_TIMEOUT` environment variable was being ignored by CLI wait commands, causing them to use hardcoded 30-second timeouts instead of the configured default.
## Changes Made
- **Centralized timeout injection**: Modified `parse_command()` to automatically inject `flags.default_timeout` into any wait-family command that doesn't already have an explicit `--timeout` flag
- **Environment variable parsing**: Added `default_timeout` field to `Flags` struct that reads from `AGENT_BROWSER_DEFAULT_TIMEOUT` env var
- **Daemon propagation**: Updated daemon spawning to pass through the default timeout via environment variables
- **Unified timeout handling**: Added `timeout_ms()` helper method in `DaemonState` that all wait handlers now use instead of scattered `unwrap_or()` calls
- **Comprehensive test coverage**: Added 10 regression tests covering all wait command variants and edge cases
## Implementation Details
The fix uses a two-stage approach:
1. CLI parses the env var and injects timeout values into command JSON for any `wait*` action
2. Daemon reads the env var and provides a centralized fallback via `timeout_ms()` helper
This ensures new wait variants automatically inherit the default timeout without requiring per-variant wiring.
Fixes#1147
* fix: preserve 30s default timeout for backward compatibility
The default_timeout_ms fallback was set to 25_000ms, which silently
changes the existing 30_000ms behavior for users who haven't set
AGENT_BROWSER_DEFAULT_TIMEOUT. Restore the original 30s default.
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Co-authored-by: ctate <366502+ctate@users.noreply.github.com>
