fix: allow resolve API to handle non-standard Python executable names (Fixes #375)

[karthiknadig]

Removes the is_python_executable_name guard from resolve_environment() so that non-standard Python executable names (e.g., mayapy.exe, hython.exe) are not rejected when explicitly provided via the resolve API.

• The name check in find_executables() (directory scanning) is preserved for performance
• The resolve path now trusts the caller-provided executable and attempts locator identification + spawning regardless of filename
• Added tests verifying non-standard names reach the locator chain
• Added documentation tests for DCC tool executable names (mayapy, hython, bpy)

Fixes #375

[github-actions]

Test Coverage Report (Linux)

Metric	Value
Current Coverage	64.3%
Base Branch Coverage	64.1%
Delta	.2% ✅

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Coverage increased! Great work!

[github-actions]

Performance Report (Linux) ➖

Metric	PR (P50)	PR (P95)	Baseline (P50)	Delta	Change
Server Startup	1ms	1ms	1ms	0ms	0%
Full Refresh	97ms	438ms	95ms	2ms	0%

Results based on 10 iterations. P50 = median, P95 = 95th percentile.

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Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[github-actions]

Performance Report (Windows) ✅

Metric	PR (P50)	PR (P95)	Baseline (P50)	Delta	Change
Server Startup	9ms	12ms	13ms	-4ms	-30.8%
Full Refresh	165ms	5343ms	224ms	-59ms	-26.3%

Results based on 10 iterations. P50 = median, P95 = 95th percentile.

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)

[github-actions]

Test Coverage Report (Windows)

Metric	Value
Current Coverage	60.41%
Base Branch Coverage	60.21%
Delta	0.2% ✅

---

Coverage increased! Great work!

[github-actions]

Performance Report (macOS)

Metric	PR (P50)	PR (P95)	Baseline (P50)	Delta
Server Startup	84ms	679ms	52ms	32ms
Full Refresh	142ms	38251ms	93ms	49ms

Results based on 10 iterations. P50 = median, P95 = 95th percentile.

---

Legend

• 🚀 Significant speedup (>100ms faster)
• ✅ Faster than baseline
• ➖ No significant change
• 🔺 Slower than baseline (>100ms)
• ⚠️ Significant slowdown (>500ms)