diff --git a/docs/timeline.md b/docs/timeline.md
index e9a3b5316..5c73a029c 100644
--- a/docs/timeline.md
+++ b/docs/timeline.md
@@ -10,25 +10,25 @@ The following chart shows all 29 epics across 9 legendary workstreams, 7 milesto
 @startgantt
 
 title CleverAgents Core — Epic-Level Project Schedule
-footer Generated 2026-04-08 | 29 Epics | 9 Legendaries | 7 Milestones | 6 Developers | ~1650 SP | ~878 open bugs | 1 open PR | Session 4 active
+footer Generated 2026-04-09 | 29 Epics | 9 Legendaries | 7 Milestones | 6 Developers | ~1650 SP | ~2861 open bugs | 145 open PRs | Session 4 active
 
 Project starts 2026-02-03
 saturday are closed
 sunday are closed
 printscale weekly zoom 2
 
-today is 2026-04-08
+today is 2026-04-09
 today is colored in #FF6666
 
 ' ================================================================
-'  GANTT CHART UPDATE LOG (Day 98 — 2026-04-08)
-'  Changes: Day 98 refresh. New build session #4799 launched 2026-04-08.
-'  Open PRs: 108→1 (massive merge wave). Open bugs: ~878 (stable).
-'  M3 73% (235/320), M4 67% (108/161), M5 71% (130/183), M6 29% (188/638, scope expanded!),
-'  M7 48% (150/312), M8 47% (403/855).
-'  Progress since Day 96: M3 +8%, M4 +7%, M5 +3%, M7 +5%, M8 +1%.
-'  M6 scope expanded massively: 327→638 total issues (+311 new issues added).
-'  Session 4 active. Session tracker issue: #4799.
+'  GANTT CHART UPDATE LOG (Day 99 — 2026-04-09)
+'  Changes: Day 99 refresh. Session 4 active (#4799, 32 workers).
+'  Open PRs: 1→145 (+144 new PRs opened by agents). Open bugs: ~878→~2861 (+1983 new bugs!).
+'  M3 62% (240/387, scope grew 320→387), M4 56% (108/191, scope grew 161→191),
+'  M5 69% (130/187, scope grew 183→187), M6 27% (192/711, scope grew 638→711),
+'  M7 47% (150/313), M8 47% (422/880), M9 29% (129/435).
+'  Massive bug explosion: 878→2861 open bugs (+1983). Agent-driven issue creation continues.
+'  All milestones M3-M7 remain overdue. M8/M9 in active development.
 ' ================================================================
 
 <style>
@@ -400,15 +400,15 @@ legend right
   | v3.5.0 | Mar 10 | 2 | 151 | Autonomy hardening + server stubs |
   | v3.6.0 | Mar 27 | 2 | 100 | Deferred work |
   ----
-  **Risk Register (Day 96 — 2026-04-06)**
+  **Risk Register (Day 99 — 2026-04-09)**
   |= Epic |= Completion |= Risk |= Blocker |
-  | M3 (#357) | 65% | **CRITICAL** | 131 open issues in v3.2.0 |
-  | M4 (#358) | 60% | **CRITICAL** | 74 open issues in v3.3.0 |
-  | M5 (#359) | 68% | **HIGH** | 63 open issues in v3.4.0 |
-  | M6 (#360) | 55% | **HIGH** | 147 open issues in v3.5.0 |
-  | M7 (#361) | 43% | **HIGH** | 198 open issues in v3.6.0 |
-  | M8 (#362) | 46% | **HIGH** | 499 open issues in v3.7.0 (agent expansion) |
-  | SEC (#363) | 28% | **HIGH** | 336 open issues in v3.8.0 (agent expansion) |
+  | M3 (#357) | 62% | **CRITICAL** | 147 open issues in v3.2.0; scope grew 320→387 |
+  | M4 (#358) | 56% | **CRITICAL** | 83 open issues in v3.3.0; scope grew 161→191 |
+  | M5 (#359) | 69% | **HIGH** | 57 open issues in v3.4.0; scope grew 183→187 |
+  | M6 (#360) | 27% | **CRITICAL** | 519 open issues in v3.5.0; scope grew 638→711 |
+  | M7 (#361) | 47% | **HIGH** | 163 open issues in v3.6.0 |
+  | M8 (#362) | 47% | **HIGH** | 458 open issues in v3.7.0; scope grew 855→880 |
+  | SEC (#363) | 29% | **HIGH** | 306 open issues in v3.8.0; 2861 total open bugs! |
   ----
   **Color Key**
   |= Color |= Meaning |
@@ -416,11 +416,11 @@ legend right
   | <back:LightSkyBlue>    </back> | In Progress |
   | <back:#E8E8E8>    </back> | Not Started |
   | <back:Gold>  <>  </back> | Milestone Target |
-  | <back:#FF6666>  |  </back> | Today (2026-04-06) |
+  | <back:#FF6666>  |  </back> | Today (2026-04-09) |
   ----
   29 Epics | 9 Legendaries | 7 Milestones | 6 Developers
   ~1649 total story points | ~3300 estimated hours
-  **~878 open bugs — 108 open PRs — Session 3 active (16 workers, ~71 agents)**
+  **~2861 open bugs — 145 open PRs — Session 4 active (32 workers, #4799)**
 end legend
 
 @endgantt
@@ -444,7 +444,7 @@ saturday are closed
 sunday are closed
 printscale weekly zoom 2
 
-today is 2026-04-08
+today is 2026-04-09
 today is colored in #FF6666
 
 <style>
@@ -1965,13 +1965,13 @@ This section provides a high-level overview of the CleverAgents implementation r
 
 ### Current Status Summary
 
-As of Day 98 (2026-04-08), the project has **1 open PR** (down from 108 — massive merge wave!) and **~1458 open issues** across active milestones. **Session 4 is active (launched 2026-04-08, issue #4799) with 32 parallel workers and full supervisor fleet**. Bug count is **~878 open bugs** (stable). M8 (v3.7.0) is now **47% complete** (403/855 issues closed). M3 (v3.2.0) at **73%** (235/320), M4 (v3.3.0) at **67%** (108/161), M5 (v3.4.0) at **71%** (130/183), M6 (v3.5.0) at **29%** (188/638 — scope massively expanded from 327 to 638 issues), M7 (v3.6.0) at **48%** (150/312).
+As of Day 99 (2026-04-09), the project has **145 open PRs** (up from 1 — agents opened 144 new PRs) and **~1733 open issues** across active milestones. **Session 4 is active (launched 2026-04-08, issue #4799) with 32 parallel workers and full supervisor fleet**. Bug count is **~2861 open bugs** (massive increase from ~878 — +1983 new bugs filed by agents). M8 (v3.7.0) is now **47% complete** (422/880 issues closed). M3 (v3.2.0) at **62%** (240/387, scope grew 320→387), M4 (v3.3.0) at **56%** (108/191, scope grew 161→191), M5 (v3.4.0) at **69%** (130/187), M6 (v3.5.0) at **27%** (192/711, scope grew 638→711), M7 (v3.6.0) at **47%** (150/313).
 
-**M1, M2 fully complete. M3 (v3.2.0)**: 73% complete (235/320), 85 open issues. **M4 (v3.3.0)**: 67% complete (108/161), 53 open issues. **M5 (v3.4.0)**: 71% complete (130/183), 53 open issues. **M6 (v3.5.0)**: 29% complete (188/638), 450 open issues — scope expanded massively (+311 new issues). **M7 (v3.6.0)**: 48% complete (150/312), 162 open issues. **M8 (v3.7.0)**: 47% complete (403/855), 452 open issues. All milestones M3-M7 are **overdue**; M8 is in active v3.7.0 development.
+**M1, M2 fully complete. M3 (v3.2.0)**: 62% complete (240/387), 147 open issues. **M4 (v3.3.0)**: 56% complete (108/191), 83 open issues. **M5 (v3.4.0)**: 69% complete (130/187), 57 open issues. **M6 (v3.5.0)**: 27% complete (192/711), 519 open issues — scope continues to expand. **M7 (v3.6.0)**: 47% complete (150/313), 163 open issues. **M8 (v3.7.0)**: 47% complete (422/880), 458 open issues. **M9 (v3.8.0)**: 29% complete (129/435), 306 open issues. All milestones M3-M7 are **overdue**; M8/M9 are in active development.
 
-!!! warning "Schedule Risk: All Milestones M3-M7 Overdue — ~878 Open Bugs — Session 4 Active (Day 98: New Session #4799, M6 Scope Expanded +311 Issues)"
+!!! warning "Schedule Risk: All Milestones M3-M7 Overdue — ~2861 Open Bugs — Session 4 Active (Day 99: 145 Open PRs, Bug Count Exploded +1983)"
 
-    All milestones M3 through M7 have passed their target dates. **Session 4 launched 2026-04-08 with 32 parallel workers**. Open PRs at **1** (down from 108 — massive merge wave). Open bugs at **~878** (stable). Session tracker issue: #4799. **Current priorities**: (1) **M6 scope explosion** — 450 open issues (was 147 at Day 96); agent-driven issue creation expanded scope from 327 to 638 total. (2) **Triage ~878 open bugs** — systematic review required. (3) **Continue M8 push** — 47% complete, 452 issues remaining. (4) **Clear M3/M4/M5 backlogs** — M3 at 73% (85 open), M4 at 67% (53 open), M5 at 71% (53 open).
+    All milestones M3 through M7 have passed their target dates. **Session 4 active (launched 2026-04-08, #4799) with 32 parallel workers**. Open PRs at **145** (up from 1 — agents opened 144 new PRs). Open bugs at **~2861** (up from ~878 — massive +1983 bug explosion from agent-driven UAT and bug-hunter activity). Session tracker issue: #4799. **Current priorities**: (1) **Bug explosion triage** — 2861 open bugs requires systematic review and TDD counterpart creation. (2) **M6 scope explosion** — 519 open issues (scope grew 638→711); continued agent-driven expansion. (3) **Clear M3/M4/M5 backlogs** — M3 at 62% (147 open), M4 at 56% (83 open), M5 at 69% (57 open). (4) **Review 145 open PRs** — agents opened 144 new PRs since Day 98.
 
 ### Parallel Workstreams
 
@@ -5223,3 +5223,96 @@ Story points per developer per milestone.
 | M9 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~TBD SP |
 | M6+ | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~TBD SP |
 | **Total** | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~1649 SP |
+
+### 2026-04-09 (Day 99)
+
+**Summary**
+
+Status: Behind 20+d
+Deadline risk: CRITICAL
+
+**Notes**
+
+- Day 99 update (2026-04-09). Session 4 remains active (#4799, 32 parallel workers, full supervisor fleet).
+- Open PRs surged from 1 to 145 (+144 new PRs opened by agents since Day 98). Agents are actively implementing features and fixes across all active milestones.
+- Open bugs exploded from ~878 to ~2861 (+1983 new bugs). Bug-hunter, UAT, and spec-compliance agents filed massive volumes of new issues. This is the largest single-day bug increase recorded.
+- Milestone scope continued to grow due to agent-driven issue creation: M3 (320→387, +67), M4 (161→191, +30), M5 (183→187, +4), M6 (638→711, +73), M7 (312→313, +1), M8 (855→880, +25), M9 new data (435 total, 129 closed).
+- Milestone completion percentages dropped despite stable or growing closed counts, due to scope expansion outpacing closures: M3 73%→62%, M4 67%→56%, M5 71%→69%, M6 29%→27%, M7 48%→47%.
+- M8 (v3.7.0) closed count grew: 403→422 (+19 issues closed). M9 (v3.8.0) now tracked: 129/435 = 29% complete, 306 open.
+- Architecture review agent (issue #5158) and human liaison (issue #5157) both active. Backlog groomer (issue #5152) and system watchdog (issue #5150) running. Spec updater (issue #5145) and agent evolver (issue #5143) active.
+- All milestones M3-M7 remain overdue. Critical path: triage 2861 open bugs, review 145 open PRs, continue M3/M4/M5 backlog clearance.
+
+
+#### Milestone forecast
+
+| Milestone | Target -> ETA | Delta | Risk |
+|-----------|---------------|-------|------|
+| M1 (v3.0.0) | (2026-02-15) -> COMPLETE | 0d | COMPLETE |
+| M2 (v3.1.0) | (2026-02-22) -> COMPLETE | 0d | COMPLETE |
+| M3 (v3.2.0) | (2026-02-26) -> ETA 2026-05-15 | +78d | CRITICAL — 147 open issues; 62% complete (scope grew 320→387, +67 new issues) |
+| M4 (v3.3.0) | (2026-03-02) -> ETA 2026-05-20 | +79d | CRITICAL — 83 open issues; 56% complete (scope grew 161→191, +30 new issues) |
+| M5 (v3.4.0) | (2026-03-06) -> ETA 2026-05-10 | +65d | HIGH — 57 open issues; 69% complete (scope grew 183→187) |
+| M6 (v3.5.0) | (2026-03-10) -> ETA 2026-07-15 | +127d | CRITICAL — 519 open issues; 27% complete (scope grew 638→711, +73 new issues) |
+| M7 (v3.6.0) | (2026-03-28) -> ETA 2026-06-05 | +69d | HIGH — 163 open issues; 47% complete |
+| M8 (v3.7.0) | (no deadline) -> ETA 2026-07-20 | N/A | HIGH — 458 open issues; 47% complete (scope grew 855→880) |
+| M9 (v3.8.0) | (no deadline) -> ETA 2026-08-10 | N/A | HIGH — 306 open issues; 29% complete; 2861 total open bugs |
+
+#### Track forecast
+
+| Track | Status | ETA | Risk | Blocking |
+|-------|--------|-----|------|----------|
+| Track A (Plan lifecycle + persistence) | Complete | Done | LOW | None |
+| Track B (Projects/resources + sandbox) | In Progress | ETA 2026-05-10 | MEDIUM | 57 open issues in v3.4.0; scope grew +4 |
+| Track C (Actors/tools/skills/validations) | In Progress | ETA 2026-05-20 | CRITICAL | 83 open issues in v3.3.0; scope grew +30; UAT spec compliance bugs ongoing |
+| Track D (Change tracking + apply pipeline) | In Progress | ETA 2026-05-15 | CRITICAL | 147 open issues in v3.2.0; scope grew +67; agent-driven expansion outpacing closures |
+| Track Q (Quality automation) | Ongoing | N/A | CRITICAL | 2861 open bugs (+1983 in one day!); 145 open PRs need review |
+| Track T (Testing) | Active | Ongoing | HIGH | 145 open PRs need review; UAT/bug-hunter agents filing bugs at high velocity |
+
+#### Developer forecast
+
+| Name | Days Ahead/Behind | Availability | Risk | Focus |
+|------|-------------------|--------------|------|-------|
+| Jeff | -24d behind | active | HIGH | Session 4 supervisor; M3/M4/M5 backlog clearance; architecture oversight; PR review |
+| Luis | -24d behind | active | HIGH | M6 (v3.5.0) features; security hardening; PR review pool; bug triage |
+| Hamza | -24d behind | active | HIGH | Resource DAG; v3.6.0 features; AWS CloudResource; PR reviews |
+| Aditya | -24d behind | active | HIGH | M5 features; TDD counterparts; domain model work; UAT testing |
+| Brent | -24d behind | active | HIGH | Bug fixes; TDD counterparts; quality automation; 2861 open bugs triage |
+| Rui | -24d behind | active | HIGH | TUI features; UAT bug fixes; security bug-hunt; E2E testing |
+| Mike/Brian | N/A | standby | LOW | Infrastructure support |
+
+#### Task inventory
+
+Milestone per developer as of Day 99 (2026-04-09).
+
+| Milestone | Jeff | Aditya | Luis | Hamza | Brent | Rui | Unassigned | Total |
+|-----------|------|--------|------|-------|-------|-----|------------|-------|
+| M1 | 29/29 | 16/16 | N/A | 4/4 | 10/10 | N/A | 35/35 | 96/96 |
+| M2 | 26/26 | 14/14 | N/A | 1/1 | 5/5 | N/A | 6/6 | 56/56 |
+| M3 | N/A | N/A | N/A | N/A | N/A | N/A | 147 open | 240/387 |
+| M4 | N/A | N/A | N/A | N/A | N/A | N/A | 83 open | 108/191 |
+| M5 | N/A | N/A | N/A | N/A | N/A | N/A | 57 open | 130/187 |
+| M6 | N/A | N/A | N/A | N/A | N/A | N/A | 519 open | 192/711 |
+| M7 | N/A | N/A | N/A | N/A | N/A | N/A | 163 open | 150/313 |
+| M8 | N/A | N/A | N/A | N/A | N/A | N/A | 458 open | 422/880 |
+| M9 | N/A | N/A | N/A | N/A | N/A | N/A | 306 open | 129/435 |
+| **Total** | **N/A** | **N/A** | **N/A** | **N/A** | **N/A** | **N/A** | **~1733 open** | **1467/3200** |
+
+Note: "done/total" = closed/total for that milestone. Assignee data reflects Forgejo API as of Day 99 (2026-04-09). Most open issues are unassigned or assigned to freemo (Jeff). Agent-driven issue creation continues at high velocity. Bug count exploded from ~878 to ~2861 (+1983) due to UAT pool, bug-hunter, and spec-compliance agents filing issues at unprecedented rate. M3 scope grew 320→387 (+67), M4 grew 161→191 (+30), M5 grew 183→187 (+4), M6 grew 638→711 (+73), M8 grew 855→880 (+25). M9 now tracked: 129/435 closed (29%).
+
+#### Story point allocation
+
+Story points per developer per milestone.
+
+| Milestone | Jeff | Aditya | Luis | Hamza | Brent | Rui | Unassigned | Total |
+|-----------|------|--------|------|-------|-------|-----|------------|-------|
+| M1 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~172 SP |
+| M2 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~208 SP |
+| M3 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~104 SP |
+| M4 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~126 SP |
+| M5 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~129 SP |
+| M6 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~TBD SP |
+| M7 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~100 SP |
+| M8 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~TBD SP |
+| M9 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~TBD SP |
+| M6+ | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~TBD SP |
+| **Total** | N/A | N/A | N/A | N/A | N/A | N/A | N/A | ~1649 SP |