v0.15.0 Velocity Release - Agent architecture refactor and multi-agent platform

What Changed

16,083-line run_agent.py refactored to 3,821 lines (-76%) across 14 modular agent/* components; Kanban evolved into multi-agent platform with auto-decomposition, swarm topology, per-task model overrides, and worktree-per-task; cold-start performance improved another 1 second; session_search rebuilt 4,500x faster with no LLM cost; Promptware defense added against Brainworm-class attacks; Bitwarden Secrets Manager integration replaces per-provider API keys; 19 security-tagged issues closed.

Operator Implication

Dramatic performance improvements and architectural modernization. Operators deploying this release should validate Kanban workflows, verify Bitwarden Secrets Manager setup for credential rotation, and test Promptware defense patterns. Cold-start time improvements benefit resource-constrained deployments.

Receipt

• Release notes: 'The Velocity Release.' Hermes gets dramatically faster — to start, to run, to ship work, and to grow. The 16,083-line run_agent.py collapses t