Approval pack: roadmap, help and support

Approve by number in Slack (e.g. "R1-R8 ok, R19: post-publish").

• R1-R30: roadmap, changelog, help, blog + dashboard (spec 1.3)
• S1-S39: report a bug, AI chat, learning loop, Support add-on (spec 1.4)
• I1-I22: dashboard Customers section (Support, Ideas, Forms) - replaces the dashboard R/S screens