chore: fix .gitignore to track decompiled .dis/.bin disassemblies

.gitignore used '*' as ignore-all with only extension whitelists, so the 128
handoff/nls_dasm/*.dis + 6 *.bin disassembly outputs (f_563a60, f_56e3e0,
f530850_full, f_52b570, fft, twin, ...) were NOT tracked - data-loss risk.
Now un-ignore handoff/nls_dasm/*.{dis,bin} explicitly. Heavy .bin dumps
(soothe_mem.bin etc.), logs, wav/rpp, dl/lib/bin/ghidra-proj stay ignored.

handoff/nls_dasm/fun_180040d20.dis

@@ -0,0 +1,13 @@
+
+/tmp/det/fun_180040d20.bin:     file format binary
+
+
+Disassembly of section .data:
+
+0000000180000000 <.data>:
+   180000000:	48 83 ec 28          	sub    $0x28,%rsp
+   180000004:	48 89 4c 24 30       	mov    %rcx,0x30(%rsp)
+   180000009:	48 8d 4c 24 30       	lea    0x30(%rsp),%rcx
+   18000000e:	e8 2d 9d ae 01       	call   0x181ae9d40
+   180000013:	48 83 c4 28          	add    $0x28,%rsp
+   180000017:	c3                   	ret