* Add sidebar metadata CLI subcommands and API docs
Expose set-status, clear-status, list-status, set-progress,
clear-progress, log, clear-log, list-log, and sidebar-state as
proper CLI subcommands with --help support and usage() listing.
Previously these only existed as raw socket commands.
Also adds a "Sidebar metadata commands" section to the docs site
API reference page.
* Quote multi-word values in socket command strings
Fix set-progress --label and log message forwarding to properly
quote values before sending to the socket tokenizer. Without
quoting, multi-word labels like "Build step one" would be split
into separate tokens. Also quote --source values for consistency.
* Fix socket quoting: escape backslashes and quote status values
Add socketQuote() helper that escapes both backslashes and double
quotes before wrapping in quotes. Apply it to:
- set-status value (prevents --flags in values being parsed as options)
- set-status --icon and --color values
- set-progress --label
- log --source and message text
Fixes values like "pytest --maxfail=1" or "C:\new\build" being
mangled by the socket tokenizer.
* Escape newlines in socketQuote to prevent socket framing breakage
The socket protocol uses newline as message terminator, so embedded
newlines/carriage returns in values would truncate the command.
* Parse flags before positionals in set-status, clear-status, set-progress
Fixes flags-first invocation like `cmux set-status --workspace workspace:2
build compiling` which previously grabbed `--workspace` as the key.
Now all flags are extracted first, then positional args are validated.
f7457055f1
