fix(swift): a call written after try! links what it calls on Windows (#2683)

The Windows kernels read the `!` of every `try!` as a logical not, so
`try! Message2(data: d)` became a call of `! Message2` that never resolves,
and a call through a receiver lost it: `try! Settings.Defaults.load()` was a
bare `load`.

The cause is the grammar's C, not the walker. tree-sitter-swift 0.7.3's
external scanner steps aside for the `!` of `try!` through a 64-bit mask
whose entry is built as `1UL << FAKE_TRY_BANG`, bit 32. `unsigned long` is 32
bits on Windows and MSVC folds the overflowing shift to 0 (warning C4293),
so the scanner never stepped aside: `try` parsed alone, then a prefix `!` on
the callee. macOS and Linux have 64-bit longs, and clang's wasm32 build folds
the shift to bit 31 (`_directive_endif`, valid at every expression start),
so the wasm and the other kernels have always read `try!` right.

The kernel now compiles the crate tarball's src/ itself, from
codegraph-kernel/grammars/swift, with upstream 0.7.4's one-line fix (`1ULL`),
as it already does for the Kotlin, Lua, Scala and Dart grammars. The patch and
its provenance are in docs/grammars/tree-sitter-swift.patch and .md. parser.c
is unchanged, so the node-kind and field tables still match the wasm, which
is untouched.

TortureTry.swift pins calls after try!, try? and try on both engines.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

codegraph-kernel/Cargo.toml

@@ -41,11 +41,10 @@ tree-sitter-ruby = "=0.23.1"
 # php: the walker calls LANGUAGE_PHP (the full HTML-interleaving variant the
 # wasm ships) — NEVER LANGUAGE_PHP_ONLY, which errors on leading HTML.
 tree-sitter-php = "=0.24.2"
-# swift: the vendored wasm is built from THIS crate's tarball src/ (the tag's
-# checked-in parser.c is an older ABI-14 generation that can never sha-match;
-# grammar.json rules are JSON-equal — swift checklist header). parser.c is
-# ~20MB generated — expect slow compiles.
-tree-sitter-swift = "=0.7.3"
+# swift: NOT a crate dep — the kernel compiles tree-sitter-swift 0.7.3's
+# tarball src/ itself (grammars/swift, build.rs), with a one-line scanner fix
+# the crate's own build lacks on Windows (`try!`; docs/grammars/
+# tree-sitter-swift.md). The vendored wasm is built from the same tarball.
 # r: the vendored wasm IS r-lib v1.2.0 and this crate's tarball ships both
 # generated artifacts sha-identical to the tag (parser.c 6221657347…,
 # scanner.c 1209d11076… — r checklist §Grammar prep). ABI 14 (the tag
@@ -59,7 +58,7 @@ tree-sitter-r = "=1.2.0"
 tree-sitter-luau = "=1.2.0"
 
 # tree-sitter-language: the version-agnostic LanguageFn shim for the vendored
-# kotlin grammar C (see build.rs — no kotlin crate dep is possible).
+# grammar C (kotlin, lua, scala, dart, swift — see build.rs).
 tree-sitter-language = "0.1"
 
 # Stack-bounds queries for the walker stack guard (src/stack.rs, #1581):