DevEx: phpc lint --all for project trees (MiniWebApp blocker report)

[PurHur]

Problem

phpc lint only accepts a single entry file (bin/lint.php). Multi-file apps (#67, #246 examples/003-MiniWebApp/) need a directory-wide report listing every unsupported construct with issue links — not one file at a time.

#243 gates shipped examples in CI but does not define recursive lint for future MiniWebApp trees.

Goal

phpc lint --all examples/003-MiniWebApp
# or: phpc lint --project examples/003-MiniWebApp/public/index.php

Walks include/require with string-literal paths (best effort), prints aggregated issues, exits non-zero if any file fails.

Implementation hints

1. bin/lint.php / lib/Lint/Linter.php: add --all <dir> or --project <entry> flag.
2. Reuse LintCompiler + UnsupportedRegistry (docs/unsupported-syntax.md).
3. BFS/DFS from entry: follow literal include/require paths relative to file dir; skip dynamic includes with warning.
4. --json: emit array of {file, line, kind, issue} for Reference: MiniWebApp lint-first skeleton (examples/003-MiniWebApp) #246 README blocker table generation.
5. CI: optional test/unit/PhpcLintProjectTest.php on examples/000-HelloWorld (expect exit 0).

Acceptance criteria

docker run --rm -v "$(pwd):/compiler" -w /compiler php-compiler:22.04-dev \
  ./phpc lint --all examples/003-MiniWebApp

When #246 scaffold exists: output lists #192, #53, #99, etc. with file:line; exit code 1 until blockers close.

Verification (local only)

./script/ci-local.sh --filter PhpcLint

No GitHub Actions required.

Dependencies

• DevEx: phpc lint reports unsupported Stmt/Expr before LogicException #236 structured lint (closed)
• Reference: MiniWebApp lint-first skeleton (examples/003-MiniWebApp) #246 MiniWebApp skeleton (consumer)
• Testing: phpc lint gate for shipped examples in CI #243 examples CI lint gate (may call --all for 003 later)

Links

• lib/Lint/, docs/unsupported-syntax.md, 🗺️ ROADMAP: Compile a small PHP web application (living document) #78 ROADMAP Phase 0

[PurHur]

Closed via #354.