chore: release v0.6.3

[hhimanshu]

🤖 New release

• truecalc-core: 0.6.2 -> 0.6.3 (✓ API compatible changes)
• truecalc-mcp: 0.6.2 -> 0.6.3

Changelog

truecalc-core

0.6.3 - 2026-04-25

Other

• (fixtures) remove legacy m1-m4 xlsx fixtures and align lab with source-first layout

truecalc-mcp

0.6.2 - 2026-04-25

Other

• update Cargo.lock dependencies

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This PR was generated with release-plz.

[github-actions]

Test Coverage by Category

Category	Unit Tests	Google Sheets Conformance	Property Cases	Total
Array	42	301/301 ✓	1,000 (2×500)	1,343
Database	35	175/175 ✓	3,500 (7×500)	3,710
Date	348	295/295 ✓	2,500 (5×500)	3,143
Engineering	245	841/841 ✓	5,500 (11×500)	6,586
Filter	11	20/20 ✓	4,500 (9×500)	4,531
Financial	149	182/182 ✓	2,000 (4×500)	2,331
Info	0	390/390 ✓	4,500 (9×500)	4,890
Logical	114	250/250 ✓	3,500 (7×500)	3,864
Lookup	69	361/361 ✓	1,000 (2×500)	1,430
Math	528	1,923/1,923 ✓	8,000 (16×500)	10,451
Operator	75	263/263 ✓	7,500 (15×500)	7,838
Parser	80	94/94 ✓	4,000 (8×500)	4,174
Statistical	480	2,557/2,557 ✓	5,000 (10×500)	8,037
Text	305	658/660 ⚠	4,000 (8×500)	4,965
Volatile	0	—	3,500 (7×500)	3,500
Web	29	56/56 ✓	6,000 (12×500)	6,085
Total	2,620	8,366/8,368	66,000 (132×500)	~76,988

_{✓ = 100% passing · ⚠ = known deviation · The ~76,988 total counts formula evaluations (each conformance row and each property case = 1). GitHub Checks reports 2,879 Rust test functions: 2,620 unit + 159 property functions (shown as cases above) + 100 conformance/integration.}