Sweep all src/**.zig comments that cite resolved issues (issue NNNN /
fix-NNNN / KB-N): the invariant or mechanism each comment states is
kept; the historical citation is dropped, per the no-conclusion-comments
rule. Pure-history parentheticals are removed outright. References to
the 16 still-open issues (0030, 0041-0056) are untouched, as are test
NAMES carrying regression provenance (matching the sanctioned
"Regression (issue NNNN)" example-header convention).
Also removes the issues/0019-import-non-transitive-c-scope/ fixture dir
— the issue is superseded and its behavior is covered by
examples/0706-modules-import-non-transitive.sx (the .md writeup stays).
issues/0030's repro .sx stays: that issue is an open feature request.
Gate: zig build OK; zig build test 426/426; run_examples 541/0; zero
expected/ snapshot churn.
Adds `src/lsp/corpus_sweep.test.zig`: a permanent test that drives the
editor analyzer (`DocumentStore.analyzeDocument` — the exact path the
server's `textDocument/didOpen` uses) over EVERY `.sx` file in the
example + issue corpora, in process. The contract: analysis must
complete without panic/abort for any file. A panic aborts the test
binary — the loud CI signal that some new AST node shape crashes the
analyzer (the bug class issue 0099 fixed at sema.zig:397).
- Corpus dirs are injected as absolute paths at configure time
(build.zig `corpus_paths` options module) so the sweep is
CWD-independent; the FILE LIST is still read from disk at test time,
so new examples are covered automatically with no test edit.
- Imports resolve against the shipped `library/` (root_path + stdlib
path set), so the analyzer runs over real, fully-resolved code —
maximum crash surface, mirroring an editor session opened on the repo.
- Wired into `zig build test` via the `src/root.zig` lsp barrel, same
mechanism document.test.zig uses (refAllDecls reaches one struct deep,
so the file is referenced directly).
- `SX_LSP_SWEEP_VERBOSE` prints each file before analysis; on a crash the
last printed line names the offending file.
Coverage: 470 examples + 1 issue repro analyze with zero crashes.
Regression-guard proven: temporarily reverting A's sema.zig:397 fix
(`@intCast(ate.length.data.int_literal.value)`) makes the sweep abort
with `access of union field 'int_literal' while field 'identifier' is
active`; restoring it turns the sweep green.
