chore: release v0.7.5

[hopeatina]

Summary

Patch release 0.7.5 — includes all changes since 0.7.4:

• fix(dashboard): type-safe scoring, usage cache, agent plumbing, summary endpoint #203 — Type-safe scoring fields on NextUpQueueItem, usage summary 30s cache, activeAgents plumbing, initiatives summary endpoint
• fix(dashboard): activity filter auto-expand, jargon cleanup, autopilot stop UX #204 — Activity filter auto-expand fix (Last hour no longer silently expands), jargon cleanup, autopilot stop UX ("Stopping Autopilot…")
• feat: refine mission control next-up transitions #205 — Next-up panel transition polish and running row visibility

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