docs: mark tui.md milestones complete

tui.md

@@ -558,3 +558,28 @@ includes the webhooks section.
 - Webhook smoke: httptest server receives payload through the dispatcher
 - README updated with `gitflow tui` and webhooks sections
 - Cross-compile verification (linux/amd64, darwin/arm64, windows/amd64)
+
+---
+
+## Implementation Progress
+
+All milestones from this plan are implemented and merged into `main`.
+
+| Milestone | Branch | Status |
+|---|---|---|
+| M1 — HTTP client refactor | `feat/tui-webhooks-m1-httpclient` | ✅ done |
+| M2 — TUI skeleton | `feat/tui-webhooks-m2-tui-skeleton` | ✅ done |
+| M3 — TUI interaction | `feat/tui-webhooks-m3-tui-interaction` | ✅ done |
+| M4 — TUI AI + polish | `feat/tui-webhooks-m4-tui-ai-polish` | ✅ done |
+| M5 — Webhook core | `feat/tui-webhooks-m5-webhook-core` | ✅ done |
+| M6 — Webhook config + wiring | `feat/tui-webhooks-m6-webhook-config` | ✅ done |
+| M7 — Integration & docs | (squashed into M6 merge) | ✅ done |
+
+### Verification
+
+- go build, go vet, go test -race (13 packages), gofmt clean — all green
+- Cross-compilation: windows/amd64, darwin/arm64
+- `gitflow tui --help` prints usage; model logic tests cover navigation, AI, and views
+- Webhook senders round-trip through httptest; Slack Block Kit and Discord embed shapes verified
+- Webhook config parsed from YAML with duration fixup; bad configs rejected
+- Watch closure fires dispatcher in a goroutine per frame