Renames the `coder boundary` CLI subcommand to `coder agent-firewall` as
part of the Boundaries → Agent Firewall rebrand.
`coder boundary` is retained as a hidden, deprecated alias that prints a
deprecation notice to stderr before running. Both commands use separate
builder functions backed by the same boundary base command and license
verification logic.
Closes https://linear.app/codercom/issue/AIGOV-236
<details><summary>Implementation notes</summary>
**Approach:** Two separate `*serpent.Command` objects (not `Aliases`) so
the deprecated `boundary` path can print a stderr warning while
`agent-firewall` stays clean.
**Changes:**
- `enterprise/cli/boundary.go`: Split old `boundary()` into
`buildAgentFirewallCmd()` and `buildBoundaryAliasCmd()`. Error messages
in `verifyLicense` now reference "agent-firewall".
- `enterprise/cli/root.go`: Register both commands.
- `cli/root.go`: Update YAML-only option validation bypass for the new
command name.
- Tests: Rename to `TestAgentFirewallSubcommand`, add
`TestBoundaryAlias`, update license verification tests to use
`agent-firewall`.
- Golden files and CLI reference docs regenerated.
- `docs/ai-coder/agent-firewall/version.md` and `docs/manifest.json`
updated.
</details>
> Generated with [Coder Agents](https://coder.com/agents) by @SasSwart
Source code changes:
- Added a wrapper for the boundary subcommand that checks feature
entitlement before executing the underlying command.
- Added a helper that returns the Boundary version using the
runtime/debug package, which reads this information from the go.mod
file.
- Added FeatureBoundary to the corresponding enum.
- Move boundary command from AGPL to enterprise.
`NOTE`: From now on, the Boundary version will be specified in go.mod
instead of being defined in AI modules.
Sas Swart