feat: reintroduce pretty-logging and update codebase for modern conventions

[preminger]

Screenshots

Before: (running with --verbose --debug)

After: (running with --verbose --debug)

Description

This pull request includes the following updates and improvements:

• Reinstated pretty-logging for compiled output and improved linting; details:

  • Mage originally enforced (via testing) a requirement that the stave_output_file.go it produces - generated from (what is now, in the Stave codebase) the mainfile.gotmpl template - make use of no dependencies that are not in the Go standard library.
    • I cannot see why this is necessary.
      • I see the logic in it not pulling down any Stave pkg/ dependencies in particular - since that would create a "burrowing" dependency:
        • I.e., the compilation & testing of version n+1 of Stave would depend on what was the latest release of Stave at that time, creating a non-repeatable development path.
      • But this problem does not arise with dependencies on other non-3rd-party code.
  • So I relaxed that requirement, and used charmbracelet/log in mainfile.gotmpl.
    • Thus, the generated binary that the stavefile is compiled into has pretty-printed structured logging, just like the outer Stave app has.
  • I also replaced the previous TestOnlyStdLib test with a TestNoSelfDependencies that enforces the new, more relaxed requirement (namely, that mainfile.gotmpl not import any stave code).

• Adjusted LintGo target dependencies to include the missing Init dependency.

• Reverted structured-logging for verbose option (-v/--verbose) to simpler console messages.

before:

time=2025-12-05T15:54:07.761-05:00 level=INFO msg="running dependency" dependency=Test
time=2025-12-05T15:54:07.761-05:00 level=INFO msg="running dependency" dependency=Init
time=2025-12-05T15:54:07.761-05:00 level=INFO msg="running dependency" dependency=TestGo
time=2025-12-05T15:54:07.761-05:00 level=INFO msg="running dependency" dependency=Lint
time=2025-12-05T15:54:07.761-05:00 level=INFO msg=exec cmd=brew args="[\"bundle\" \"--file=Brewfile\"]"
time=2025-12-05T15:54:07.761-05:00 level=INFO msg="running dependency" dependency=LintGo
time=2025-12-05T15:54:07.761-05:00 level=INFO msg="running dependency" dependency=Markdownlint
time=2025-12-05T15:54:07.761-05:00 level=INFO msg=exec cmd=golangci-lint args="[\"run\" \"--fix\" \"--allow-parallel-runners\" \"--build-tags='!ignore'\"]"

after:

[STAVE] Running dependency: Test
[STAVE] Running dependency: Init
[STAVE] Running dependency: TestGo
[STAVE] Running dependency: Lint
[STAVE] Running dependency: LintGo
[STAVE] Running dependency: Markdownlint
[STAVE] exec: brew "bundle" "--file=Brewfile"
[STAVE] exec: golangci-lint "run" "--fix" "--allow-parallel-runners" "--build-tags='!ignore'"

• Removed deprecated // +build statements for modern build tags.

• Replaced usages of deprecated io/ioutil package with appropriate alternatives.

• Deleted install_test.go as its functionality is now covered by CI's dogfooding bootstrap.

[jamesainslie]

Wonderbra!!