diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7380fa..ef81643 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,13 @@ All notable changes to the `.github` organization configurations repository will
 - Added the MIN-408 Linear release gate contract for release pipelines,
   merge-to-verification behavior, and evidence-backed `Done` transitions.
 - Removed the deleted `orggenome-compiler` archive from the verified organization inventory.
+- Dropped the 14 repositories deleted on 2026-10-01 (HELM-900: `app-developer-portal`,
+  `contracts-autonomous-release-canary`, `contracts-autonomous-release-lab`, `demo-repository`,
+  `helm-compiler-lab`, `integration-ai-flows`, `orggenome-compiler`, `platform-agent-capabilities`,
+  `platform-mcp-registry`, `platform-policies`, `platform-templates`, `svc-agent-control-plane`,
+  `svc-high-risk-loop-bridge`, `worker-helm-launch-worker`) from `repo-manifest.yaml`, recorded them
+  under `deleted_repositories`, and removed them from `manifest-local-policy.yaml` and the
+  ecosystem-map name lists.
 
 ## [1.0.2] - 2026-06-01
 
diff --git a/README.md b/README.md
index 00c655a..0c5dead 100644
--- a/README.md
+++ b/README.md
@@ -8,8 +8,8 @@ The canonical inventory is `repo-manifest.yaml`.
 
 Current verified state:
 
-- 50 repositories in the canonical HELM/Mindburn inventory.
-- 49 active repositories and 1 archived repository.
+- 43 repositories in the canonical HELM/Mindburn inventory.
+- 43 active repositories and no archived repository.
 - `tempora` is a separate product and `tg-knowledge-scraper` is tooling-only; neither belongs in this inventory.
 - Production release readiness is tracked in `integration-mindburn-platform/manifests/release-candidate.yaml`.
 - Final-state evidence is tracked in `integration-mindburn-platform/manifests/final-state-evidence.yaml`.
diff --git a/manifest-local-policy.yaml b/manifest-local-policy.yaml
index 3591483..9f34c27 100644
--- a/manifest-local-policy.yaml
+++ b/manifest-local-policy.yaml
@@ -8,18 +8,10 @@ manifest_only:
     reason: active HELM operator-review dashboard is not checked out in the canonical workspace
     owner: repo-maintainers
     expires: 2026-08-21
-  contracts-autonomous-release-canary:
-    reason: disposable public HELM autonomous-release interlock canary is not checked out in the canonical workspace
-    owner: repo-maintainers
-    expires: 2026-08-21
   helm-rollout-evidence:
     reason: release evidence repo not checked out locally
     owner: release-platform
     expires: 2026-07-15
-  orggenome-compiler:
-    reason: archived 2026-06-10; split into ml-orggenome-compiler + svc-orggenome-inference; local checkout removed
-    owner: ml-platform
-    expires: 2027-06-30
   tempora:
     reason: active Tempora repository is maintained outside the canonical Mindburn polyrepo workspace
     owner: repo-maintainers
diff --git a/repo-manifest.yaml b/repo-manifest.yaml
index f902b9b..447ba01 100644
--- a/repo-manifest.yaml
+++ b/repo-manifest.yaml
@@ -12,17 +12,28 @@ source_truth_priority:
 - runbooks_and_architecture_docs
 - org_inventory
 inventory_summary:
-  total_repositories: 57
-  active_repositories: 56
-  archived_repositories:
-  - orggenome-compiler
+  total_repositories: 43
+  active_repositories: 43
+  archived_repositories: []
   deleted_repositories:
   - app-docs-platform
   - platform-design-system
-  public_repositories:
-  - ".github"
+  - app-developer-portal
   - contracts-autonomous-release-canary
   - contracts-autonomous-release-lab
+  - demo-repository
+  - helm-compiler-lab
+  - integration-ai-flows
+  - orggenome-compiler
+  - platform-agent-capabilities
+  - platform-mcp-registry
+  - platform-policies
+  - platform-templates
+  - svc-agent-control-plane
+  - svc-high-risk-loop-bridge
+  - worker-helm-launch-worker
+  public_repositories:
+  - ".github"
   - helm-agent-integrations
   - helm-ai-kernel
   - homebrew-tap
@@ -45,10 +56,6 @@ repositories:
   visibility: public
   archived: false
   updated_at: '2026-07-21T12:03:37Z'
-- name: app-developer-portal
-  visibility: private
-  archived: false
-  updated_at: '2026-07-02T00:34:51Z'
 - name: app-helm-admin
   visibility: private
   archived: false
@@ -65,14 +72,6 @@ repositories:
   visibility: private
   archived: false
   updated_at: '2026-07-21T06:44:53Z'
-- name: contracts-autonomous-release-canary
-  visibility: public
-  archived: false
-  updated_at: '2026-07-15T15:50:08Z'
-- name: contracts-autonomous-release-lab
-  visibility: public
-  archived: false
-  updated_at: '2026-07-20T20:21:09Z'
 - name: contracts-catalog
   visibility: private
   archived: false
@@ -80,9 +79,6 @@ repositories:
 - name: cycleseal
   visibility: public
   archived: false
-- name: demo-repository
-  visibility: private
-  archived: false
 - name: dev-orchestration
   visibility: private
   archived: false
@@ -125,10 +121,6 @@ repositories:
   visibility: public
   archived: false
   updated_at: '2026-07-21T12:32:45Z'
-- name: helm-compiler-lab
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:51:46Z'
 - name: helm-desktop
   visibility: private
   archived: false
@@ -161,10 +153,6 @@ repositories:
   visibility: private
   archived: false
   updated_at: '2026-07-16T20:09:24Z'
-- name: integration-ai-flows
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:53:55Z'
 - name: integration-helm
   visibility: private
   archived: false
@@ -181,10 +169,6 @@ repositories:
   visibility: private
   archived: false
   updated_at: '2026-07-21T12:56:03Z'
-- name: orggenome-compiler
-  visibility: private
-  archived: true
-  updated_at: '2026-06-10T15:39:07Z'
 - name: pkg-mindburn-helm-ds
   visibility: private
   archived: false
@@ -197,38 +181,18 @@ repositories:
   visibility: internal
   archived: false
   updated_at: '2026-07-21T12:53:16Z'
-- name: platform-agent-capabilities
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:52:40Z'
 - name: platform-agent-substrate
   visibility: private
   archived: false
   updated_at: '2026-07-21T12:52:31Z'
-- name: platform-mcp-registry
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:53:23Z'
 - name: platform-observability
   visibility: private
   archived: false
   updated_at: '2026-07-21T12:54:28Z'
-- name: platform-policies
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:53:32Z'
-- name: platform-templates
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:54:48Z'
 - name: platform-terraform-modules
   visibility: private
   archived: false
   updated_at: '2026-07-21T12:54:00Z'
-- name: svc-agent-control-plane
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:54:07Z'
 - name: svc-agent-sandbox-runner
   visibility: private
   archived: false
@@ -245,10 +209,6 @@ repositories:
   visibility: private
   archived: false
   updated_at: '2026-07-21T14:20:54Z'
-- name: svc-high-risk-loop-bridge
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:53:40Z'
 - name: svc-orggenome-inference
   visibility: private
   archived: false
@@ -261,7 +221,3 @@ repositories:
   visibility: internal
   archived: false
   updated_at: '2026-07-17T23:29:00Z'
-- name: worker-helm-launch-worker
-  visibility: private
-  archived: false
-  updated_at: '2026-07-21T12:55:57Z'
diff --git a/scripts/generate-helm-ecosystem-map.rb b/scripts/generate-helm-ecosystem-map.rb
index fe59444..aca7aa2 100644
--- a/scripts/generate-helm-ecosystem-map.rb
+++ b/scripts/generate-helm-ecosystem-map.rb
@@ -95,13 +95,13 @@ def group_for(name)
   case name
   when ".github"
     "GitHub Metadata"
-  when "app-developer-portal", "app-helm-console", "app-helm-docs", "app-mindburn-web"
+  when "app-helm-console", "app-helm-docs", "app-mindburn-web"
     "Frontend / User Surfaces"
   when "app-docs-platform", "platform-design-system"
     "Archived UI / Design"
   when "pkg-mindburn-helm-ds", "pkg-mindburn-web-ds"
     "Design Systems"
-  when "helm-ai-kernel", "helm-ai-enterprise", "helm-agent-integrations", "helm-compiler-lab", "worker-helm-launch-worker", "helm-rollout-evidence"
+  when "helm-ai-kernel", "helm-ai-enterprise", "helm-agent-integrations", "helm-rollout-evidence"
     "HELM Core / Product"
   when /^svc-/
     "Backend / Runtime Services"
@@ -317,7 +317,7 @@ def render_markdown(state)
       ["Connector contracts or packs", "`helm-ai-enterprise`, `contracts-catalog`, `svc-helm-certification`, `integration-helm`"],
       ["Production release state", "`integration-mindburn-platform`, `gitops-apps`, `gitops-platform`"],
       ["Infrastructure/server access", "`mindburn-infra`, `docs_for_team`"],
-      ["Agent substrate/RLM support", "`platform-agent-substrate`, `platform-agent-capabilities`, `svc-agent-sandbox-runner`"]
+      ["Agent substrate/RLM support", "`platform-agent-substrate`, `svc-agent-sandbox-runner`"]
     ]
   )
   lines << ""