Fix IV0016 docs, remove dead diagnostic constants, fix MinLength/MaxLength inclusive-bound messages

[Copilot]

Three unrelated housekeeping fixes bundled together.

#294 — IV0016 marked as removed in analyzer docs

Immediate.Validations.Analyzers.md still listed IV0016 as an active rule despite it being removed in 2.3. Section now annotated (Removed in 2.3) with Enabled: False.

#295 — Dead diagnostic constants removed

DiagnosticIds.cs contained two constants with no analyzer, no descriptor, and no release entry:

• IV0019ValidatorIsMissingDefaultMessage — leftover from a rename; IV0010 covers this case
• IV0016ValidateParameterPropertyIncompatibleType — orphaned after IV0016 was removed in 2.3

#296 — MinLength/MaxLength messages corrected to inclusive bounds

Both validators use >= / <= but their default messages said more than / less than (exclusive).

Validator	Before	After
MinLength	must be more than {N} characters	must be at least {N} characters
MaxLength	must be less than {N} characters	must be at most {N} characters

Updated EN and FR localizations. Updated all affected test assertions and added explicit boundary-value tests confirming that a value at exactly the limit passes.

[coveralls]

Coverage Report for CI Build 30314613686

Coverage decreased (-4.3%) to 83.852%

Details

• Coverage decreased (-4.3%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 114 coverage regressions across 1 file.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

114 previously-covered lines in 1 file lost coverage.

File	Lines Losing Coverage	Coverage
src/Common/ITypeSymbolExtensions.cs	114	18.32%

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Coverage Stats

Relevant Lines:	2217
Covered Lines:	1859
Line Coverage:	83.85%
Coverage Strength:	3.35 hits per line

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💛 - Coveralls