## Summary

Replaces individual \`@user\` mentions in CODEOWNERS with GitHub team
mentions. Identical approval semantics — only the *shape* of each
owner-set line changes. Roster management moves from "edit CODEOWNERS"
to "edit team membership in the org Teams UI."

Builds on the framework merged in aethersdr#3053.

## What changes

| Tier | Was | Now | Members today |
|---|---|---|---|
| Tier 1 | \`@ten9876\` | \`@aethersdr/maintainers\` | @ten9876 |
| Tier 2 | \`@ten9876 @jensenpat\` | \`@aethersdr/infrastructure\` |
@ten9876, @jensenpat |
| Tier 3 | \`@ten9876 @jensenpat @NF0T @rfoust\` |
\`@aethersdr/reviewers\` | @ten9876, @jensenpat, @NF0T, @rfoust |

The path-to-tier mapping is unchanged from aethersdr#3053. No file moves tier;
only the mention shape on each line changes.

## Prerequisite — repo access for the teams

GitHub only honors \`@org/team\` mentions in CODEOWNERS when the team
has **Write or higher** access to the repository. Before this PR merges,
verify in the org Teams UI:

| Team | Required access | Recommended |
|---|---|---|
| \`@aethersdr/maintainers\` | Write (minimum) | **Admin** (manages
branch protection / settings) |
| \`@aethersdr/infrastructure\` | Write (minimum) | **Maintain** (can
edit some repo settings / manage releases) |
| \`@aethersdr/reviewers\` | Write (minimum) | **Write** |

Per team: org Teams page → click the team → **Repositories** tab → **Add
repository** → \`aethersdr/AetherSDR\` → set access level.

GitHub will surface a warning at the top of this PR's "Files changed"
tab if any of the team mentions fail to resolve (team doesn't exist,
doesn't have access, or has the wrong access level). If the file is
valid, no warning.

## Header comment changes

The doc block at the top of CODEOWNERS now:

- References team slugs as the source of truth, with \`(currently:
<users>)\` annotations naming the current human members for
documentation
- Points readers to \`https://github.com/orgs/aethersdr/teams\` as the
live roster source
- Notes that \`@AetherClaude\` is intentionally not a member of any team
(preserves the human-only-approval rule from aethersdr#3053)

## How last-match-wins resolves (post-merge, semantically identical to
today)

| File | Pattern that matches | Team |
|---|---|---|
| \`CLAUDE.md\` | T1: \`CLAUDE.md\` | @aethersdr/maintainers |
| \`README.md\` | T2: \`*.md\` | @aethersdr/infrastructure |
| \`docs/install.md\` | T2: \`docs/\` (last match) |
@aethersdr/infrastructure |
| \`.github/workflows/ci.yml\` | T1: \`.github/workflows/\` |
@aethersdr/maintainers |
| \`.github/codeql/codeql-config.yml\` | T1: \`.github/codeql/\` |
@aethersdr/maintainers |
| \`.claude/commands/loop.md\` | T1: \`.claude/commands/\` |
@aethersdr/maintainers |
| \`src/gui/MainWindow.cpp\` | T3: \`*\` | @aethersdr/reviewers |
| \`tests/foo.cpp\` | T2: \`tests/\` | @aethersdr/infrastructure |
| \`CMakeLists.txt\` | T2: \`CMakeLists.txt\` |
@aethersdr/infrastructure |

## Why this is a follow-up rather than a fix-up of aethersdr#3053

- aethersdr#3053 settled the tier model + path categorization
- This PR is a pure mention-shape refactor on top of the settled model
- Keeping them separate makes each step easier to review and bisect
- This change requires the teams to exist (they do, as of today) and
have repo access (must be granted before merge)

## Stats

- 1 file change to \`.github/CODEOWNERS\`
- +35 / -31

## Test plan

- [x] Diff review confirms only \`.github/CODEOWNERS\` is touched
- [x] All owner-set lines now reference \`@aethersdr/<team>\` (no
individual @user mentions on owner-set lines)
- [ ] Org Teams UI: verify all three teams exist with the expected
member rosters
- [ ] Org Teams UI: verify each team has \`aethersdr/AetherSDR\` listed
under Repositories with Write+ access
- [ ] GitHub validates the CODEOWNERS syntax on this PR — no warning
banner on the Files changed tab
- [ ] After merge: test PR touching \`README.md\` shows "Requesting
review from @aethersdr/infrastructure"
- [ ] After merge: test PR touching \`CLAUDE.md\` shows "Requesting
review from @aethersdr/maintainers"
- [ ] After merge: test PR touching \`src/gui/MainWindow.cpp\` shows
"Requesting review from @aethersdr/reviewers"
- [ ] After merge: adding a new contributor to \`@aethersdr/reviewers\`
immediately makes them an eligible reviewer on any \`*\` path, with no
further CODEOWNERS edits required

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>