# Milestone P · Phase 1 — P0 Beachhead Validation

**Objective:** prove that the personal briefing concept is valuable enough for repeated use among target users.

## Success Criteria

- 20-50 target users onboarded.
- Two-week concierge pilot completed.
- Median user performs >= 1 explicit feedback action per session.
- D2 and D7 retention measured and reviewed.
- Qualitative interviews confirm stronger perceived value vs baseline feed habits.

**Dependencies:** M0 complete, M1 partial (signal write/read path sufficient for prototype adaptation).

**Blocked by:** final target segment and recruitment criteria.

**Unblocks:** P1 Concierge Alpha build.

## Task Index

| # | Task | Delivers | Depends On | Complexity |
|---|------|----------|------------|------------|
| 01 | Target Segment and Recruitment | persona definition, recruitment script, candidate pool | None | S |
| 02 | Concierge Pilot Loop | daily briefing workflow, manual QA process, interview cadence | Task 01 | M |
| 03 | Validation Readout | retention and interview analysis, go/no-go decision | Task 02 | S |
