release: v0.3.0 - Mecklenburg-Vorpommern complete

[ChBrain]

v0.3.0 Release

What's complete

• Mecklenburg-Vorpommern - all 5 roads, 67 exits with full narrative content
  • A20 (28 exits), A19 (20 exits), A11 (2 MV exits), A14 (8 MV exits), A24 (9 MV exits)
• A24 - Hamburg-Berlin corridor complete, 19 exits across Hamburg, Schleswig-Holstein, Mecklenburg-Vorpommern, Brandenburg

Review fixes (this PR)

• A14 index: Fixed Kritzow link path (wrong case), fixed km 59.1 label (was 'Schwerin-Ost', is 'Kreuz Schwerin')
• A24 index + Suckow exit: Fixed Putlitz link typo (\putliz\ -> \putlitz)
• MV state Withheld: Removed false claim about 'Robel gap' on A20 (it is on A19, not A20, and already covered there)
• SH state A24 entry: Title corrected to reflect SH section (Kreuz Hamburg-Ost to Gudow)
• README: Added MV to Bundesland downloads, added A11/A14/A19 to road table, updated A24 description, updated quality statement

Validation

✓ 342 files, 0 findings