fix(capy-install): the install reason names the project's pin and gstack's real minimum

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

bin/gstack-capy-install

@@ -158,7 +158,7 @@ if printf '%s\n' "$PINS_OUT" | grep -q '^PINS_VERDICT: '; then
 $(printf '%s\n' "$PINS_OUT" | sed -n 's/^PIN: bun \([^ ]*\) exact \([^ ]*\) lane=[a-z]*$/\1 \2/p')
 EOF_PINS
     pins_ok "$WANT" || stop RUNTIME_PIN_CONFLICT "Bun conflict: gstack needs >=$WANT, $PROJECT pins $(printf '%s\n' "$PINS_OUT" | sed -n 's/^PIN_SUMMARY: //p' | grep '^bun' | tr '\n' ';' | sed 's/;$//')" "raise the project's pin to $WANT or newer, or install gstack on a machine the project accepts"
-    if [ "$LD_VER" = "$WANT" ]; then reuse_ld; else install_bun "bun ${HAVE:-absent} does not satisfy the project pins (or gstack's minimum $WANT)"; fi
+    if [ "$LD_VER" = "$WANT" ]; then reuse_ld; else install_bun "bun ${HAVE:-absent} does not satisfy the project pins (bun $WANT) or gstack's minimum $GSTACK_BUN_TESTED"; fi
   fi
 else
   # No pin report (no project, or a Bun that cannot run the parser): the

test/gstack-capy-install.test.ts

@@ -171,6 +171,7 @@ describe('gstack-capy-install', () => {
     expect(sh(`cd "${f.base}/z" && zip -qr "${zip}" bun-linux-x64`).status).toBe(0);
     const adopted = run(f, ['--project', project], { STUB_CURL_ZIP: zip });
     expect(adopted.stdout).toContain('installing bun 1.4.3 from its release archive');
+    expect(adopted.stdout).not.toContain("gstack's minimum 1.4.3");
     expect(f.calls().filter(l => l.startsWith('curl '))).toEqual([expect.stringContaining('https://github.com/oven-sh/bun/releases/download/bun-v1.4.3/bun-linux')]);
     expect(adopted.status).toBe(3);
     expect(adopted.stderr).toContain('SHA-256 mismatch');