lib: move strconv tests into the package dir (Go layout)

lib/strconv/test/ was the last _test layout deviating from Go's
in-package shape (src/bytes/bytes_test.go declares bytes_test in the
package dir). Its rationale — `import strconv` file-hitting the
sibling strconv.ww — dissolved when #98 made directory packages win
over same-named files on any search entry. libbyteid re-paths the
three fx entries and drops the covered() carve-out: the completeness
scan now keys lib/strconv through the fixtures' dirname. Walk line
flips to "ok lib/strconv [strconv_test, external]".

lib/strconv/ftos_test.ww

@@ -1,7 +1,5 @@
 // ftostest — exercises lib/strconv/ftos.ww (Hare ftos.ha / ftos_ryu.ha
-// Ryū port). Run with `out/bin/ww run lib/strconv/test/ftos_test.ww`.
-// A failing row aborts via the assert/abort builtin (task #5 @test
-// conversion).
+// Ryū port).
 //
 // Ports ref/hare/strconv/+test/ftos_test.ha's ffmt::G / prec=void /
 // fflags::NONE rows (the f64tos cases) verbatim — these are exactly
@@ -15,10 +13,6 @@
 // "pass for both f32 and f64" set, lines 9/183); the _extremes rows mirror
 // tcsf32 (ftos_test.ha:218-221, the f32-EXCLUSIVE denormal/min/max — full
 // f32 mantissa). f32 values use the `f32` literal suffix or f32frombits.
-//
-// Lives in lib/strconv/test/ so `import strconv` resolves to the
-// DIRECTORY (full package), not the strconv.ww FILE — same rationale as
-// stoftest/decimaltest.
 
 package strconv_test;
 

lib/strconv/int_test.ww

@@ -1,7 +1,5 @@
 // inttest — exercises lib/strconv integer parse: parseint / stoi64 /
-// stou64 / the iN/uN width wrappers. Run with
-// `out/bin/ww run lib/strconv/test/inttest.ww`. A failing row aborts via
-// the assert/abort builtin (task #5 @test conversion).
+// stou64 / the iN/uN width wrappers.
 //
 // Verbatim port of ref/hare/strconv/stoi.ha:56-86 (stoi/stoi_bases) and
 // stou.ha:116-138 (stou/stou_bases). Hare's strconv integer tests are
@@ -10,10 +8,6 @@
 // verbatim ports). The leading id arg to each check helper is retained
 // to keep the rows 1:1 but is now inert (signalled plumbing removed, task #5).
 //
-// Lives in lib/strconv/test/ (not lib/strconv/) so `import strconv`
-// resolves to the lib/strconv DIRECTORY (pulls the full package), not
-// the strconv.ww FILE — same rationale as 922_decimal_run.
-//
 // Hex/oct/bin expected values are written in decimal (ww has no 0x/0o/0b
 // literal form for the expectation side); the original Hare radix form
 // is noted inline.

lib/strconv/stof_test.ww

@@ -1,6 +1,4 @@
 // stoftest — exercises lib/strconv/stof.ww (Hare stof.ha port).
-// Run with `out/bin/ww run lib/strconv/test/stoftest.ww`. A failing row
-// aborts via the assert/abort builtin (task #5 @test conversion).
 //
 // Ports ref/hare/strconv/stof.ha's @test vectors (stof64 / stof32 /
 // stofhex). Comparisons are BIT-level (math.f64bits / f32bits) so a
@@ -9,10 +7,6 @@
 // f64frombits(INF_BITS) (ww math has no NAN/INF f32/f64 const — see
 // math/floats.ww). Hex extremes (Hare's math::F64_MAX_NORMAL etc.,
 // absent in ww math) assert against the IEEE-754 bit patterns directly.
-//
-// Lives in lib/strconv/test/ so `import strconv` resolves to the
-// DIRECTORY (full package: strconv.ww + decimal.ww + stof_data.ww +
-// stof.ww), not the strconv.ww FILE — same rationale as decimaltest.
 
 package strconv_test;