Fix issue fixes: gateway fallback, escalation, and dashboard refresh

Fix run gating, template validation, and model/delivery handling

fix: scope uninstall to antfarm-managed agents

chore: inject version v0.5.1 into landing page and README

chore: bump version to 0.5.1

feat: add sequential run numbers for human-friendly references (#100)

feat: add sequential run numbers for human-friendly references

chore: bump version to 0.5.0

fix: update tests to reflect 'default' model from #134

fix: use underscore delimiter for agent IDs to prevent namespace collisions

fix: update landing page to match current functionality

fix: CLI fallback passes agentId and delivery mode to cron jobs (#106)

chore: inject version v0.4.3 into landing page and README

chore: bump version to 0.4.3

fix: normalize SQLite timestamps in dashboard to prevent timezone errors