CLI: Update hypeman SDK to b0c2df62be9425b0bc720e8307eb2447d892a2f7 and add new commands/flags

[kernel-internal]

This PR updates the Hypeman Go SDK to b0c2df62be9425b0bc720e8307eb2447d892a2f7 and adds CLI commands/flags for new SDK methods.

SDK Update

• Updated hypeman-go to b0c2df62be9425b0bc720e8307eb2447d892a2f7

This is an evergreen branch, so it also carries the CLI coverage work accumulated since it last merged to main.

Coverage Analysis

This PR was generated by performing a full enumeration of SDK methods and CLI commands.

All 53 methods in api.md, spanning the 36 paths in the API openapi.yaml, map to a CLI command, and every field on every *Params struct maps to a flag. No endpoint carries x-cli-skip: true. The methods intentionally left without a dedicated command are the ones used internally by other commands: Instances.Get (inspect and name resolution), Instances.Stat (cp), Builds.Events (streamed by build), and Volumes.NewFromArchive (push and volume create --from-archive).

The triggering commit (ci: add stlc promotion workflows) only adds GitHub Actions workflows to the SDK repo, so it introduced no new methods or params to wire up, and this round found no coverage gaps. The command and flag work below was accumulated on this branch from earlier SDK updates.

Fixes

• hypeman resources reclaim-memory (for client.Resources.ReclaimMemory()) was implemented but never appeared under hypeman resources --help. urfave/cli renders the no-subcommand help template when a command has exactly one subcommand and a hidden help command, which drops the COMMANDS: section entirely. resources is the only command in the tree with a single child, so it was the only one affected. Pinned CustomHelpTemplate to SubcommandHelpTemplate and added TestSubcommandsAreListedInHelp, which walks the whole command tree and asserts each parent lists its children, so a future single-child command cannot regress the same way.

New Commands

• hypeman auto-standby hold <instance> for client.Instances.AutoStandby.Hold()

New Flags

• --platform on hypeman image create and hypeman pull for ImageNewParams.Platform, now sent as a typed field instead of a raw JSON override

Triggered by: kernel/hypeman-go@b0c2df6
Reviewer: @sjmiller609

[firetiger-agent]

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[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[rgarcia]

reviewed the current diff and SDK pin; local build and full Go test suite pass. The prior BugBot finding is resolved and outdated, and BugBot is green on the latest commit.