…ctions

`check_identifier`, `check_identifier_reference`, and
`check_binding_identifier` run on every identifier-class AST node when
`with_check_syntax_error(true)` is set (the configuration used by
`oxc_linter`, `oxc::compiler`, and most embedders). Each one only does
real work for a small fixed set of reserved-word names:

- `check_identifier`: `await` plus 9 strict-mode contextual keywords.
- `check_identifier_reference`: `arguments` and `eval`.
- `check_binding_identifier`: `eval`, `arguments`, and `let`.

The vast majority of identifiers — every `foo`, `useState`, `render`,
`props`, etc. — would fall through to no error. They were nonetheless
paying the cost of an `is_typescript_definition` check plus, depending
on the function, an `is_current_node_ambient_binding` call (loads scope
flags + symbol flags), a `strict_mode()` scope-flags load, or both.

Add a leading `matches!` against the relevant name set in each function.
If the name is not in the set, return immediately. The match dispatches
by length first, so non-matching names of unrelated lengths cost a
single length check; same-length-as-a-keyword names cost one extra
memcmp.

Also add a `< 2 properties` early-exit to `check_object_expression` —
a `__proto__` duplicate requires at least two property definitions, and
JSX/TSX call sites emit huge numbers of single-property object literals
(`<Foo prop={x}>` → `{prop: x}`).

Benchmark (`cargo bench --bench semantic --no-default-features --features compiler`,
criterion vs `oxc-project/main` after #22663):

- RadixUIAdoptionSection.jsx: -1.43%
- react.development.js:       -1.93%
- cal.com.tsx:                -0.20% (within noise)
- binder.ts:                  -2.05%
- kitchen-sink.tsx:           -1.00%

Four of five are statistically significant (p < 0.05).

Verified by `cargo test -p oxc_semantic --features cfg` (72 tests),
`cargo clippy -p oxc_semantic --all-features`, and
`cargo coverage -- semantic` (snapshot counts unchanged: 45575/47095
test262, 2035/2236 babel, 2671/4773 typescript, 52/66 misc).

### 🚀 Features

- e857b0c napi/minify: Expose legalComments option and result (#20370)
(Boshen)
- 661132d parser: More friendly error messages for rest assignment
target and rest binding element (#22719) (sapphi-red)
- ee659b6 transformer/legacy-decorator: Add `strictNullChecks` option
for nullable-union design:type (#22266) (Kyle Cannon)

### 🐛 Bug Fixes

- e1d064e transformer/class-properties: Reparent lifted private method
helpers (#22716) (Cameron)
- 4ac0fca minifier: Preserve `0 && (module.exports = { ... })`
cjs-module-lexer hint (#22729) (Dunqing)
- 40ff611 minifier: Mark peephole loop changed when dropping
dead-after-throw statement (#22722) (Dunqing)
- 2f7b210 codegen: Emit pife-arrow/function leading comments inside the
wrap (#22720) (Dunqing)
- e184f74 parser: Improve invalid `import` property access diagnostic
(#22693) (camc314)
- 7baed9c transformer/private-method: Clear inherited strict flags
(#22508) (camc314)
- a9ad27e parser: Keep annotation comments leading without preceding
newline (#22711) (Dunqing)
- 9ea4d64 minifier: Re-evaluate pure/no-side-effects flags after
peephole inlining (#22595) (Dunqing)
- 07afbb6 minifier: Drop empty-body IIFE wrapper when called with
arguments (#22589) (Dunqing)
- fa7c463 semantic: Correct TS enum member symbol spans (#22689)
(camc314)
- 26b9396 semantic: Resolve parameter decorators outside parameter scope
(#22623) (camc314)
- b284045 parser: Switch to module goal eagerly on `export` (#22684)
(Boshen)
- dfa931d semantic: Propagate unresolved auto-increment enum value
instead of defaulting to 0 (#22646) (Dunqing)
- 69a6ba6 transformer/legacy-decorator: Emit Array for ReadonlyArray<T>
in decorator metadata (#22265) (Kyle Cannon)
- e421ef0 transformer/legacy-decorator: Return runtime binding for
design:type (#22640) (Dunqing)
- d61e1d7 codegen: Preserve verbatim text of pure/no-side-effects
comments (#22525) (Dunqing)
- 702b14e minifier: Preserve IIFE structure in DCE-only mode (#22547)
(Dunqing)
- 917da24 parser: Apply PURE comment through member-access chains
(#22566) (Dunqing)
- a069b1c codegen: Preserve quotes for cjs-module-lexer equality strings
(#22551) (Dunqing)

### ⚡ Performance

- 2f623b0 semantic: Skip unresolved checks for re-exports (#22660)
(camc314)
- 0d9553d semantic: Early-exit `check_object_expression` for objects
with <2 properties (#22668) (Dunqing)
- d721ad9 semantic: Use direct grandparent lookup for TS type parameters
(#22658) (camc314)
- 0aff288 semantic: Reorder numeric literal strict mode checks (#22657)
(camc314)
- 4d5ddb1 semantic: Reorder binding identifier checks (#22656) (camc314)
- e32acd8 semantic: Reorder identifier ambient binding check (#22653)
(camc314)
- 09fe178 semantic: Reorder ident reference strict mode check (#22652)
(camc314)
- 4b6add2 semantic: Avoid duplicate ident clone for bindings (#22663)
(camc314)
- 82f9662 parser: Check identifier kind before context flag (#22662)
(camc314)
- d7cd951 parser: Fast path identifier parsing and inline operator
helpers (#22650) (Boshen)
- 7b84314 semantic: Use direct byte access for numeric leading-zero
check (#22642) (camc314)
- 0345a31 semantic: Pre-size class elements hash map (#22618) (camc314)
- 04d3065 minifier: Drop per-call buffers in try_fold_concat (#22596)
(Dunqing)
- 4f289f1 semantic: Resolve_references_for_current_scope without a temp
Vec (#22599) (Dunqing)
- e862c15 semantic: Avoid heap alloc for var hoist scope ids (#22603)
(Dunqing)
- 8ff8674 semantic: Early return if `excess` is `0` in
`Stats::increase_by` (#22616) (camc314)
- 7a4120e semantic: Pre-reserve unresolved_references using
Stats::references (#22580) (Dunqing)

Co-authored-by: Dunqing <29533304+Dunqing@users.noreply.github.com>