decomp: give 104 data labels one name each

[Sploters]

Before

scripts/data-decls.py listed 717 data labels declared with more than one type or name. Many were file-suffixed aliases of the same label (D_0013D510_2607d0, D_0015ED64_k, ...), and D_0013D428 appeared as D_0013D428, D_0013D428_2c5be8 and weapon_ammo_counts.

After

• 104 labels now have one name: suffixed aliases use the label itself, keeping a _gp/_lui/_macro alias where a declaration needs another placement (docs/code-cleanup.md, Data).
• D_0013D428 is weapon_ammo_counts in every file.
• KNOWN_CONFLICTS lowered from 720 to 613 (data-decls.py: 717 -> 613).
• Left as they were: l08/.../002e9b70.c, l18/.../002a7220.c and shared/.../002d6810.c (their declarations differ in type, not only in name), and l14/.../002460f8.c, where the second name keeps FUN_L14_002aee28 exact. D_001B3200 keeps its plain name, which select_world_object_resource_tables needs to match.

43 files, renames only.

Verification

• make elf ends with PASS: reconstructed boot ELF matches retail
• make overlays ends with PASS (all 2822 overlay functions in C match retail)
• make check passes (99 tests OK)

[decomp-dev]

Report for SCUS_971.99 (6db3f55 - 1f8c7d0)

No changes

[github-actions]

Decompilation progress

	C_EXACT	Change	Matched bytes	Functions	C_FUZZY
All code	88.45 %	—	3,136,836 / 3,546,268 B (—)	3,980 / 4,233 (—)	89.70 %
Boot executable	85.65 %	—	302,216 / 352,840 B (—)	1,163 / 1,219 (—)	98.13 %
Game	84.51 %	—	230,576 / 272,844 B (—)	866 / 905 (—)	98.40 %
SDK	89.55 %	—	71,640 / 79,996 B (—)	297 / 314 (—)	97.21 %
Level overlays	88.76 %	—	2,834,620 / 3,193,428 B (—)	2,817 / 3,014 (—)	88.76 %
Shared level code	80.64 %	—	911,592 / 1,130,492 B (—)	1,442 / 1,583 (—)	80.64 %
Per-level code	93.22 %	—	1,923,028 / 2,062,936 B (—)	1,375 / 1,431 (—)	93.22 %

	Data in C	Change	Matched bytes
All data	32.31 %	—	4,017,559 / 12,433,372 B (—)
Boot executable	2.16 %	—	15,091 / 699,136 B (—)
Level overlays	34.11 %	—	4,002,468 / 11,734,236 B (—)

No function changed its match state compared with main (6db3f55).

_{Compared with main (6db3f55). C_FUZZY uses main's last measurement.}