chore: wire dev-version.yml@v1 per enterprise standard

[ashsolei]

Summary

• Wires dev-version.yml@v1 reusable workflow so every branch push produces a vX.Y.Z-dev.<branch>.<sha> tag per enterprise versioning standard
• Removes redundant permissions: contents: write block from consumer file (declared by the reusable; having it in the consumer is harmless but noisy)
• Normalizes workflow name casing to match enterprise standard

Reference

Closes PENDING doc item P5 (auto-versioning on every commit including dev phase).
Wired by dev-version-bumper agent per enterprise drift-watch sweep 2026-05-13.

Test plan

• Merge this PR
• Push any commit to a non-main branch
• Confirm a v*.*.*-dev.*.* tag appears on GitHub within 2 minutes

Do NOT merge — draft for review.

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