chore: ship v1.10.0 release surface refresh

docs/releases/1.10.0/x-thread.md

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+# X Thread Draft — ECC v1.10.0
+
+ECC crossed 140K stars and the public surface had drifted too far from the actual repo.
+
+so v1.10.0 is the sync release.
+
+38 agents
+156 skills
+72 commands
+
+plugin metadata fixed
+install surfaces corrected
+docs and release story brought back in line with the live repo
+
+also shipped the operator / media lane that grew out of real usage:
+
+- brand-voice
+- social-graph-ranker
+- connections-optimizer
+- customer-billing-ops
+- google-workspace-ops
+- project-flow-ops
+- workspace-surface-audit
+- manim-video
+- remotion-video-creation
+
+and most importantly:
+
+ECC 2.0 is no longer just roadmap talk.
+
+the `ecc2/` control-plane alpha is in-tree, builds today, and already exposes:
+
+- dashboard
+- start
+- sessions
+- status
+- stop
+- resume
+- daemon
+
+not calling it GA yet.
+
+calling it what it is:
+
+an actual alpha control plane sitting on top of the harness/workflow layer we’ve been building in public.