linux-pinetab2-danctnix-besser: bump cumulative to b2sum bd42cd3910...

Re-promoted after appending the missing git-format-patch trailer to
the kernel-agent SCS source patch (kernel-agent commit on
noether/migrate-pinetab2-pkg-and-patches). Cumulative size 157446 ->
157458, b2sum a807297b25be... -> bd42cd39106298879eeb...

Also adds .gitignore for makepkg build artifacts (src/, pkg/,
*.log*, logpipe.*).

arch/linux-pinetab2-danctnix-besser/manifest.lock

@@ -4,10 +4,10 @@ baseline:
   upstream_compat: linux-7.0
   url: https://codeberg.org/DanctNIX/linux-pinetab2
 cumulative:
-  b2sum: a807297b25bee83c4639701d90b3bebaf91e9a95fe45d167d612cd6730af24dded270290ac84195750c676a9425953f7676f03798f011ca00b2f0625e90b36eb
+  b2sum: bd42cd39106298879eeb294307963e26c8b48aef5b14c0b6e6ac24131439336617b4f6fa901064a3d0fdeb51a9fe0653a7fd8af602a08055474ba6a84cd2663d
   path: cumulative.patch
-  size: 157446
-generated_at: '2026-05-18T14:49:21.236638+00:00'
+  size: 157458
+generated_at: '2026-05-18T14:52:19.137256+00:00'
 host: ohm
 ka_promote_version: 1
 manifest:
@@ -27,6 +27,6 @@ resolved_patches:
 - apply_order: 3
   from_series: true
   include: arch/arm64/xor-neon-ffixed-x18-scs-build-fix-danctnix/0001-arm64-xor-neon-ffixed-x18-build-fix.patch
-  sha256: b026decf16345253b9df1f81b39f8593b1d2a948a530f905c4814bd94f682d06
-  size: 1562
+  sha256: 80f5bef5c58b18d7126e1c438ac113933f5244951387d62e363656d82b79cdfd
+  size: 1574
 schema_version: 1