docs: create roadmap (4 phases, 32 requirements mapped)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.planning/REQUIREMENTS.md

@@ -93,13 +93,44 @@ Which phases cover which requirements. Updated during roadmap creation.
 
 | Requirement | Phase | Status |
 |-------------|-------|--------|
-| (populated by roadmapper) | | |
+| INGST-01 (#1) | Phase 1 | Pending |
+| INGST-02 (#2) | Phase 1 | Pending |
+| INGST-03 (#3) | Phase 1 | Pending |
+| INGST-04 (#4) | Phase 1 | Pending |
+| INGST-05 (#5) | Phase 1 | Pending |
+| INGST-06 (#6) | Phase 1 | Pending |
+| SRCH-01 (#7) | Phase 2 | Pending |
+| SRCH-02 (#8) | Phase 2 | Pending |
+| SRCH-03 (#9) | Phase 2 | Pending |
+| SRCH-04 (#10) | Phase 2 | Pending |
+| SRCH-05 (#11) | Phase 2 | Pending |
+| SRCH-06 (#12) | Phase 2 | Pending |
+| AGNT-01 (#13) | Phase 3 | Pending |
+| AGNT-02 (#14) | Phase 3 | Pending |
+| AGNT-03 (#15) | Phase 3 | Pending |
+| AGNT-04 (#16) | Phase 3 | Pending |
+| AGNT-05 (#17) | Phase 3 | Pending |
+| AGNT-06 (#18) | Phase 3 | Pending |
+| AGNT-07 (#19) | Phase 3 | Pending |
+| DIAG-01 (#20) | Phase 2 | Pending |
+| DIAG-02 (#21) | Phase 2 | Pending |
+| DIAG-03 (#22) | Phase 2 | Pending |
+| SECU-01 (#23) | Phase 4 | Pending |
+| SECU-02 (#24) | Phase 4 | Pending |
+| SECU-03 (#25) | Phase 4 | Pending |
+| SECU-04 (#26) | Phase 4 | Pending |
+| SECU-05 (#27) | Phase 4 | Pending |
+| API-01 (#28) | Phase 1 | Pending |
+| API-02 (#29) | Phase 1 | Pending |
+| API-03 (#30) | Phase 1 | Pending |
+| API-04 (#31) | Phase 1 | Pending |
+| API-05 (#32) | Phase 1 | Pending |
 
 **Coverage:**
 - v1 requirements: 32 total
-- Mapped to phases: 0
-- Unmapped: 32
+- Mapped to phases: 32
+- Unmapped: 0
 
 ---
 *Requirements defined: 2026-03-11*
-*Last updated: 2026-03-11 after initial definition*
+*Last updated: 2026-03-11 after roadmap creation*