diff --git a/.github/workflows/close_stale_fix_prs.yml b/.github/workflows/close_stale_fix_prs.yml
index c1274e9bac0..c86a7cbe69e 100644
--- a/.github/workflows/close_stale_fix_prs.yml
+++ b/.github/workflows/close_stale_fix_prs.yml
@@ -14,8 +14,9 @@
 
 name: Close Stale Fix PRs
 on:
-  schedule:
-    - cron: '0 12 * * *' # 8am EST
+  # Scheduled runs disabled. Run manually via workflow_dispatch.
+  # schedule:
+  #   - cron: '0 12 * * *' # 8am EST
   workflow_dispatch:
 
 jobs:
diff --git a/.github/workflows/cut_new_releases.yml b/.github/workflows/cut_new_releases.yml
index 12ca9fcd90f..338629d9859 100644
--- a/.github/workflows/cut_new_releases.yml
+++ b/.github/workflows/cut_new_releases.yml
@@ -6,9 +6,11 @@
 
 name: Cut New Releases
 on:
-  schedule:
-    # Run this job every morning at 3am EST.
-    - cron: "0 8 * * *"
+  # Scheduled nightly runs disabled — they were failing on this fork (missing
+  # upstream infra/secrets). Run manually via workflow_dispatch instead.
+  # schedule:
+  #   # Run this job every morning at 3am EST.
+  #   - cron: "0 8 * * *"
 
   workflow_dispatch:
     inputs:
diff --git a/.github/workflows/feature_flag_cleanup.yml b/.github/workflows/feature_flag_cleanup.yml
index 280dc66cdbc..996b59eb7c8 100644
--- a/.github/workflows/feature_flag_cleanup.yml
+++ b/.github/workflows/feature_flag_cleanup.yml
@@ -1,8 +1,9 @@
 name: Feature Flag Cleanup
 
 on:
-  schedule:
-    - cron: '0 15 * * *' # 10am EST
+  # Scheduled runs disabled. Run manually via workflow_dispatch.
+  # schedule:
+  #   - cron: '0 15 * * *' # 10am EST
   workflow_dispatch:
 
 # Default to a read-only token. Jobs that need to push or open PRs widen
diff --git a/.github/workflows/fork_release_macos.yml b/.github/workflows/fork_release_macos.yml
index 2f32028a717..d6fd3fb81f7 100644
--- a/.github/workflows/fork_release_macos.yml
+++ b/.github/workflows/fork_release_macos.yml
@@ -28,11 +28,13 @@
 name: Fork Release (macOS)
 
 on:
-  schedule:
-    # Nightly at 08:00 UTC. The `check` job below short-circuits the (costly)
-    # macOS build unless the default branch has new commits since the last
-    # release.
-    - cron: "0 8 * * *"
+  # Scheduled nightly runs disabled — run manually via workflow_dispatch or by
+  # pushing a tag instead.
+  # schedule:
+  #   # Nightly at 08:00 UTC. The `check` job below short-circuits the (costly)
+  #   # macOS build unless the default branch has new commits since the last
+  #   # release.
+  #   - cron: "0 8 * * *"
   push:
     tags:
       - "v*"
diff --git a/.github/workflows/populate_build_cache.yml b/.github/workflows/populate_build_cache.yml
index b925b95097f..09754104bc4 100644
--- a/.github/workflows/populate_build_cache.yml
+++ b/.github/workflows/populate_build_cache.yml
@@ -11,10 +11,11 @@ on:
       - '**/Cargo.toml'
       - '.cargo/config.toml'
       - 'rust-toolchain.toml'
+  # Scheduled runs disabled. Run manually via workflow_dispatch.
   # Run once per day to ensure the cache is populated even if we haven't
   # modified Cargo.lock or Cargo.toml in a while.
-  schedule:
-    - cron: "0 8 * * 1-5" # Run every weekday at 3am EST.
+  # schedule:
+  #   - cron: "0 8 * * 1-5" # Run every weekday at 3am EST.
   workflow_dispatch:
 
 name: Populate Build Cache
diff --git a/.github/workflows/stale_requested_changes_prs.yml b/.github/workflows/stale_requested_changes_prs.yml
index 7666ba90ef4..f1307296fe4 100644
--- a/.github/workflows/stale_requested_changes_prs.yml
+++ b/.github/workflows/stale_requested_changes_prs.yml
@@ -20,8 +20,9 @@
 
 name: Stale Requested-Changes PRs
 on:
-  schedule:
-    - cron: '7 12 * * *' # 12:07 UTC daily (minute 7 avoids top-of-hour scheduler congestion)
+  # Scheduled runs disabled. Run manually via workflow_dispatch.
+  # schedule:
+  #   - cron: '7 12 * * *' # 12:07 UTC daily (minute 7 avoids top-of-hour scheduler congestion)
   workflow_dispatch:
     inputs:
       mode:
diff --git a/.github/workflows/update-dedupe-local.yml b/.github/workflows/update-dedupe-local.yml
index 05a799d7e6a..714c460d660 100644
--- a/.github/workflows/update-dedupe-local.yml
+++ b/.github/workflows/update-dedupe-local.yml
@@ -1,7 +1,8 @@
 name: Update Dedupe Skill (Local)
 on:
-  schedule:
-    - cron: '30 9 * * 1'  # Every Monday at 09:30 UTC
+  # Scheduled runs disabled — failing on this fork. Run manually via workflow_dispatch.
+  # schedule:
+  #   - cron: '30 9 * * 1'  # Every Monday at 09:30 UTC
   workflow_dispatch:
     inputs:
       lookback_days:
diff --git a/.github/workflows/update-pr-review-local.yml b/.github/workflows/update-pr-review-local.yml
index b1da1ac8c9b..75c9e8476f3 100644
--- a/.github/workflows/update-pr-review-local.yml
+++ b/.github/workflows/update-pr-review-local.yml
@@ -1,7 +1,8 @@
 name: Update PR Review Skill (Local)
 on:
-  schedule:
-    - cron: '0 9 * * 1'  # Every Monday at 09:00 UTC
+  # Scheduled runs disabled — failing on this fork. Run manually via workflow_dispatch.
+  # schedule:
+  #   - cron: '0 9 * * 1'  # Every Monday at 09:00 UTC
   workflow_dispatch:
     inputs:
       lookback_days:
diff --git a/.github/workflows/update-triage-local.yml b/.github/workflows/update-triage-local.yml
index 073480a9b58..8ef66b7b7fe 100644
--- a/.github/workflows/update-triage-local.yml
+++ b/.github/workflows/update-triage-local.yml
@@ -1,7 +1,8 @@
 name: Update Triage Skill (Local)
 on:
-  schedule:
-    - cron: '15 9 * * 1'  # Every Monday at 09:15 UTC
+  # Scheduled runs disabled — failing on this fork. Run manually via workflow_dispatch.
+  # schedule:
+  #   - cron: '15 9 * * 1'  # Every Monday at 09:15 UTC
   workflow_dispatch:
     inputs:
       lookback_days: