Keep roadmap diff check clean

Remove only the trailing EOF blank line so the PR satisfies whitespace validation without touching test-only Rust coverage.

Constraint: PR #2837 review requested preserving the Rust test module.

Rejected: remove Rust test module | OMX review determined it is test-only and acceptable.

Confidence: high

Scope-risk: narrow

Directive: Do not expand this fix beyond ROADMAP.md EOF whitespace.

Tested: git diff --check origin/main...HEAD; scripts/fmt.sh --check; git diff --name-status origin/main...HEAD

ROADMAP.md

@@ -6260,4 +6260,3 @@ Original filing (2026-04-18): the session emitted `SessionStart hook (completed)
 249. **`/issue` advertises GitHub issue creation but never reaches a GitHub/OAuth/auth preflight or creation path, and the non-interactive error suggests unusable resume forms** — dogfooded 2026-04-29 on current main `8e22f757` while chasing the remaining Phase-0 GitHub OAuth blocker. The visible help advertises `/issue [context]` as “Draft or create a GitHub issue from the conversation,” but the actual implementation path only renders a local `Issue` report (`format_issue_report`) and does not invoke `gh`, GitHub API, OAuth, token discovery, browser auth, or even a dry-run/auth-preflight surface. Direct non-interactive use (`./rust/target/debug/claw '/issue dogfood test'`) returns `slash command /issue dogfood test is interactive-only` and suggests `claw --resume SESSION.jsonl /issue ...` / `claw --resume latest /issue ...` “when the command is marked [resume]”, while `/help` does not mark `/issue` as resume-safe and resume dispatch rejects interactive-only commands. That leaves operators with a GitHub-labeled command whose real behavior is neither issue creation nor a clear GitHub OAuth blocker. **Required fix shape:** (a) split the contract explicitly: either rename/copy to “draft issue text” or implement a real `create` path with GitHub auth preflight; (b) surface a machine-readable GitHub auth state (`gh_cli_authenticated`, `github_token_present`, `oauth_required`, `creation_unavailable`) before any issue-create attempt; (c) make the direct-mode error avoid suggesting resume forms for commands not marked resume-safe; (d) add regression coverage proving `/issue` help, direct-mode rejection, resume support flags, and creation/draft behavior agree. **Why this matters:** Phase-0 GitHub OAuth verification cannot complete if the only GitHub issue surface stops at local prose while still advertising creation. Claws need to know whether they are missing GitHub auth, using a draft-only helper, or hitting an unimplemented creation path. Source: gaebal-gajae dogfood cycle in `#clawcode-building-in-public` on 2026-04-29.
 
 322. **Config deprecation warnings are emitted to stderr even under `--output-format json`, making JSON output unparseable from combined stdout+stderr capture** — dogfooded 2026-04-29 by Jobdori on current main (`8e22f75`). Running `cargo run --bin claw -- doctor --output-format json 2>&1 | python3 -c "import sys,json; json.loads(sys.stdin.read())"` fails with `Expecting value: line 1 column 1 (char 0)` because a `warning: /path/settings.json: field "enabledPlugins" is deprecated. Use "plugins.enabled" instead` line is emitted to stderr before the JSON body begins. When a caller captures combined output (the common automation pattern: `2>&1`, subprocess `STDOUT | STDERR`, PTY capture, or tmux pane scrape) the warning prefix breaks JSON parse for every downstream consumer. Root cause: `rust/crates/runtime/src/config.rs` line ~300 calls `eprintln!("warning: {warning}")` unconditionally during `ClawSettings::load_merged()` regardless of active output format. **Required fix shape:** (a) thread the active `CliOutputFormat` through the config loading path and suppress or defer human-readable warning strings when `json` mode is active; (b) instead, collect deprecation diagnostics and inject them into the JSON output as a top-level `"warnings": [...]` array (same field already used by `doctor`); (c) ensure the JSON body is always the first bytes on stdout and all prose warnings stay on stderr or are suppressed in json mode; (d) add regression coverage proving `claw <any-cmd> --output-format json` stdout is valid JSON regardless of config deprecation state. **Why this matters:** `--output-format json` is the automation/claw contract; if config warnings can silently corrupt the JSON stream, every orchestration layer that captures combined output gets broken parse-on-warning with no stable fallback. Source: Jobdori live dogfood on mengmotaHost, claw-code main `8e22f75`, 2026-04-29.
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