test: group examples into per-category folders

Move examples/*.sx and their expected/ snapshots into per-category
subfolders (examples/<category>/...). Folder = leading filename token,
with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus
runner and LSP sweep now discover each category's expected/ dir, while
issues/ stays flat. Example 1058's repo-root-relative companion import
is made file-relative. Path strings embedded in 164 snapshots were
regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.

examples/generics/expected/0200-generics-generic.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0200-generics-generic.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0200-generics-generic.stdout

@@ -0,0 +1,3 @@
+sum: 5
+sum: 42
+sum: 42.500000

examples/generics/expected/0201-generics-generic-struct.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0201-generics-generic-struct.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0201-generics-generic-struct.stdout

@@ -0,0 +1,14 @@
+v1: Vec3{data: [1.000000, 3.000000, 2.000000]}
+v2: [1.000000, 3.000000, 2.000000]
+buff: [0.000000, 2.000000, 3.500000, 4.000000, 0.000000]
+comp: Foo{value: 42, count: 1}
+add: [4.000000, 5.000000, 3.000000]
+v2.x: 1.000000
+v2[1]: 3.000000
+scaled: [2.000000, 6.000000, 4.000000]
+neg: [-1.000000, -3.000000, -2.000000]
+sqrt(9): 3.000000
+.user(0.500000)
+4
+16
+8

examples/generics/expected/0202-generics-anytype.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0202-generics-anytype.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0202-generics-anytype.stdout

@@ -0,0 +1 @@
+5

examples/generics/expected/0203-generics-infer-return-type.exit

@@ -0,0 +1 @@
+178

examples/generics/expected/0203-generics-infer-return-type.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0203-generics-infer-return-type.stdout

@@ -0,0 +1 @@
+

examples/generics/expected/0204-generics-generic-protocol-constraint.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0204-generics-generic-protocol-constraint.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0204-generics-generic-protocol-constraint.stdout

@@ -0,0 +1,3 @@
+after set: 100.000000x50.000000
+mid anim: 150.000000x75.000000
+end anim: 200.000000x100.000000

examples/generics/expected/0205-generics-generic-method-dot-call.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0205-generics-generic-method-dot-call.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0205-generics-generic-method-dot-call.stdout

@@ -0,0 +1,5 @@
+plain: 7
+sized i32: 4
+sized i64: 8
+taking explicit: 42
+taking inferred: 99

examples/generics/expected/0206-generics-generic-into-block.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0206-generics-generic-into-block.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0206-generics-generic-into-block.stdout

@@ -0,0 +1 @@
+generic-into-block ok: a=10 b=20

examples/generics/expected/0207-generics-value-param-const.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0207-generics-value-param-const.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0207-generics-value-param-const.stdout

@@ -0,0 +1,3 @@
+named: len=3 a0=10.000000 a2=30.000000
+expr: len=3 e2=9.000000
+copy: len=3 b2=30.000000

examples/generics/expected/0208-generics-value-param-type-function.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0208-generics-value-param-type-function.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0208-generics-value-param-type-function.stdout

@@ -0,0 +1,3 @@
+named: len=3 a0=10 a2=30
+expr: len=3 e2=9
+copy: len=3 b2=30

examples/generics/expected/0209-generics-value-param-integral-float.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0209-generics-value-param-integral-float.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0209-generics-value-param-integral-float.stdout

@@ -0,0 +1 @@
+a.len=3 b.len=4

examples/generics/expected/0210-generics-resolver-legacy-paths.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0210-generics-resolver-legacy-paths.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0210-generics-resolver-legacy-paths.stdout

@@ -0,0 +1,3 @@
+box: 42
+vec: 1.000000 4.000000
+typefn: len=3 a0=10 a2=30

examples/generics/expected/0211-generics-struct-alias-head.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0211-generics-struct-alias-head.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0211-generics-struct-alias-head.stdout

@@ -0,0 +1,8 @@
+field: 3
+method: 3
+chain: 11
+annot: ann
+helper: 7
+thing: 42
+facade: 7
+facade-annot: qq

examples/generics/expected/0212-generics-array-arg-slice-param.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0212-generics-array-arg-slice-param.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0212-generics-array-arg-slice-param.stdout

@@ -0,0 +1,5 @@
+7
+9
+8
+2
+7

examples/generics/expected/0213-generics-namespaced-call-result.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0213-generics-namespaced-call-result.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0213-generics-namespaced-call-result.stdout

@@ -0,0 +1,3 @@
+9
+1.500000
+42

examples/generics/expected/0214-generics-ufcs-closure-return-pack.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0214-generics-ufcs-closure-return-pack.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0214-generics-ufcs-closure-return-pack.stdout

@@ -0,0 +1,2 @@
+direct=42
+ufcs=42

examples/generics/expected/0215-generics-infer-through-pointer.exit

@@ -0,0 +1 @@
+0

examples/generics/expected/0215-generics-infer-through-pointer.stderr

@@ -0,0 +1 @@
+

examples/generics/expected/0215-generics-infer-through-pointer.stdout

@@ -0,0 +1,5 @@
+unbox=42
+byval=42
+second=2.500000
+nested=9
+ufcs=42