diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 28cafe34..530fa0a4 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -1,14 +1,41 @@
 version: 2
 updates:
+  # ---------- cargo ----------
   - package-ecosystem: "cargo"
     directory: "/"
+    target-branch: "dev"
     schedule:
       interval: "weekly"
     ignore:
       - dependency-name: "*"
 
+  - package-ecosystem: "cargo"
+    directory: "/"
+    target-branch: "main"
+    schedule:
+      interval: "weekly"
+    ignore:
+      - dependency-name: "*"
+
+  # ---------- console-ui ----------
+  - package-ecosystem: "npm"
+    directory: "/console-ui"
+    target-branch: "dev"
+    schedule:
+      interval: "weekly"
+    groups:
+      console-ui-deps:
+        applies-to: version-updates
+        patterns:
+          - "*"
+      console-ui-security:
+        applies-to: security-updates
+        patterns:
+          - "*"
+
   - package-ecosystem: "npm"
     directory: "/console-ui"
+    target-branch: "main"
     schedule:
       interval: "weekly"
     groups:
@@ -21,8 +48,25 @@ updates:
         patterns:
           - "*"
 
+  # ---------- sdk/typescript ----------
+  - package-ecosystem: "npm"
+    directory: "/sdk/typescript"
+    target-branch: "dev"
+    schedule:
+      interval: "weekly"
+    groups:
+      sdk-typescript-deps:
+        applies-to: version-updates
+        patterns:
+          - "*"
+      sdk-typescript-security:
+        applies-to: security-updates
+        patterns:
+          - "*"
+
   - package-ecosystem: "npm"
     directory: "/sdk/typescript"
+    target-branch: "main"
     schedule:
       interval: "weekly"
     groups:
@@ -35,8 +79,25 @@ updates:
         patterns:
           - "*"
 
+  # ---------- examples ----------
+  - package-ecosystem: "npm"
+    directory: "/examples"
+    target-branch: "dev"
+    schedule:
+      interval: "weekly"
+    groups:
+      examples-deps:
+        applies-to: version-updates
+        patterns:
+          - "*"
+      examples-security:
+        applies-to: security-updates
+        patterns:
+          - "*"
+
   - package-ecosystem: "npm"
     directory: "/examples"
+    target-branch: "main"
     schedule:
       interval: "weekly"
     groups:
@@ -49,8 +110,25 @@ updates:
         patterns:
           - "*"
 
+  # ---------- github-actions ----------
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    target-branch: "dev"
+    schedule:
+      interval: "weekly"
+    groups:
+      github-actions-deps:
+        applies-to: version-updates
+        patterns:
+          - "*"
+      github-actions-security:
+        applies-to: security-updates
+        patterns:
+          - "*"
+
   - package-ecosystem: "github-actions"
     directory: "/"
+    target-branch: "main"
     schedule:
       interval: "weekly"
     groups:
@@ -61,4 +139,4 @@ updates:
       github-actions-security:
         applies-to: security-updates
         patterns:
-          - "*"
\ No newline at end of file
+          - "*"
diff --git a/.github/workflows/chainspec-sync-check.yml b/.github/workflows/chainspec-sync-check.yml
index c9fce344..a5f2a734 100644
--- a/.github/workflows/chainspec-sync-check.yml
+++ b/.github/workflows/chainspec-sync-check.yml
@@ -2,9 +2,9 @@ name: Chainspec sync check
 
 on:
   push:
-    branches: [main]
+    branches: [main, dev]
   pull_request:
-    branches: [main]
+    branches: [main, dev]
     paths:
       - 'chainspecs/**'
       - '.github/workflows/chainspec-sync-check.yml'
diff --git a/.github/workflows/check-console-ui.yml b/.github/workflows/check-console-ui.yml
index 17ce229a..db456682 100644
--- a/.github/workflows/check-console-ui.yml
+++ b/.github/workflows/check-console-ui.yml
@@ -2,9 +2,9 @@ name: Check Console UI
 
 on:
   push:
-    branches: [main]
+    branches: [main, dev]
   pull_request:
-    branches: [ main ]
+    branches: [main, dev]
 
 jobs:
   build:
diff --git a/.github/workflows/check-runtime-migration.yml b/.github/workflows/check-runtime-migration.yml
index 13eefb9c..c8533204 100644
--- a/.github/workflows/check-runtime-migration.yml
+++ b/.github/workflows/check-runtime-migration.yml
@@ -5,9 +5,9 @@ name: Check Runtime Migrations
 
 on:
   push:
-    branches: [main, "release-*"]
+    branches: [main, dev, "release-*"]
   pull_request:
-    branches: [main, "release-*"]
+    branches: [main, dev, "release-*"]
   workflow_dispatch:
   schedule:
     - cron: '0 5 * * *'  # Daily at 5 AM UTC
diff --git a/.github/workflows/check-sdk.yml b/.github/workflows/check-sdk.yml
index 8d5f5a82..317ae562 100644
--- a/.github/workflows/check-sdk.yml
+++ b/.github/workflows/check-sdk.yml
@@ -2,9 +2,9 @@ name: Check SDKs
 
 on:
   push:
-    branches: [main]
+    branches: [main, dev]
   pull_request:
-    branches: [main]
+    branches: [main, dev]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
@@ -39,8 +39,8 @@ jobs:
       - name: Rust cache
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
-          shared-key: "bulletin-cache-sdk-rust"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-sdk-rust-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Clippy
         run: cargo clippy -p bulletin-sdk-rust --all-targets --locked --quiet -- -D warnings
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index cfb6b3c5..95df0402 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -2,9 +2,9 @@ name: CI
 
 on:
   push:
-    branches: [main]
+    branches: [main, dev]
   pull_request:
-    branches: [main]
+    branches: [main, dev]
   workflow_dispatch:
 
 concurrency:
@@ -100,8 +100,8 @@ jobs:
       - name: Rust cache
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
-          shared-key: "bulletin-cache-clippy"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-clippy-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Cargo clippy
         run: |
@@ -136,8 +136,8 @@ jobs:
       - name: Rust cache
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
-          shared-key: "bulletin-cache-tests-${{ matrix.target.name }}"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-tests-${{ matrix.target.name }}-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Run tests
         run: ${{ matrix.target.cmd }}
@@ -180,8 +180,8 @@ jobs:
       - name: Rust cache
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
-          shared-key: "bulletin-cache-benchmarks-${{ matrix.runtime.name }}"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-benchmarks-${{ matrix.runtime.name }}-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Set up Polkadot binaries
         uses: ./.github/actions/use-polkadot-binaries
diff --git a/.github/workflows/cmd-run.yml b/.github/workflows/cmd-run.yml
index 9fc7faad..dfde77a4 100644
--- a/.github/workflows/cmd-run.yml
+++ b/.github/workflows/cmd-run.yml
@@ -12,6 +12,10 @@ on:
       pr_branch:
         description: "PR branch"
         required: true
+      base_branch:
+        description: "PR base branch"
+        required: false
+        default: "dev"
       runner:
         description: "Runner to use"
         required: true
@@ -150,6 +154,7 @@ jobs:
     env:
       CMD: ${{ github.event.inputs.cmd }}
       PR_BRANCH: ${{ github.event.inputs.pr_branch }}
+      BASE_BRANCH: ${{ github.event.inputs.base_branch }}
       PR_NUM: ${{ github.event.inputs.pr_num }}
       REPO: ${{ github.event.inputs.repo }}
     runs-on: ${{ github.event.inputs.runner }}
@@ -265,7 +270,7 @@ jobs:
             --no-color \
             --change added changed \
             --ignore-errors \
-            refs/remotes/origin/main $PR_BRANCH)
+            "refs/remotes/origin/${BASE_BRANCH}" $PR_BRANCH)
 
           echo $result
 
diff --git a/.github/workflows/cmd.yml b/.github/workflows/cmd.yml
index 8d05426e..c52bbb2d 100644
--- a/.github/workflows/cmd.yml
+++ b/.github/workflows/cmd.yml
@@ -115,6 +115,7 @@ jobs:
     outputs:
       CMD: ${{ steps.get-comment.outputs.group2 }}
       pr-branch: ${{ steps.get-pr.outputs.pr_branch }}
+      base-branch: ${{ steps.get-pr.outputs.base_branch }}
       repo: ${{ steps.get-pr.outputs.repo }}
     steps:
       - name: Get command
@@ -147,9 +148,11 @@ jobs:
               pull_number: context.issue.number,
             });
             const prBranch = pr.data.head.ref;
+            const baseBranch = pr.data.base.ref;
             const repo = pr.data.head.repo.full_name;
-            console.log(prBranch, repo)
+            console.log(prBranch, baseBranch, repo)
             core.setOutput('pr_branch', prBranch);
+            core.setOutput('base_branch', baseBranch);
             core.setOutput('repo', repo);
 
       - name: Use PR Branch Name and Repo
@@ -312,6 +315,7 @@ jobs:
     env:
       CMD: ${{ needs.get-pr-info.outputs.CMD }}
       PR_BRANCH: ${{ needs.get-pr-info.outputs.pr-branch }}
+      BASE_BRANCH: ${{ needs.get-pr-info.outputs.base-branch }}
       RUNNER: ${{ needs.set-runner.outputs.RUNNER }}
       IMAGE: ${{ needs.set-runner.outputs.IMAGE }}
       REPO: ${{ needs.get-pr-info.outputs.repo }}
@@ -332,6 +336,7 @@ jobs:
             -f cmd="${CMD}" \
             -f repo="${REPO}" \
             -f pr_branch="${PR_BRANCH}" \
+            -f base_branch="${BASE_BRANCH}" \
             -f pr_num="${PR_NUMBER}" \
             -f runner="${RUNNER}" \
             -f is_org_member="${IS_ORG_MEMBER}" \
diff --git a/.github/workflows/integration-test.yml b/.github/workflows/integration-test.yml
index 313f2110..948063d4 100644
--- a/.github/workflows/integration-test.yml
+++ b/.github/workflows/integration-test.yml
@@ -2,9 +2,9 @@ name: Integration Tests
 
 on:
   push:
-    branches: [main]
+    branches: [main, dev]
   pull_request:
-    branches: [main]
+    branches: [main, dev]
   workflow_dispatch:
 
 concurrency:
@@ -91,8 +91,8 @@ jobs:
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           workspaces: .
-          shared-key: "bulletin-cache-bulletin-integration-tests"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-bulletin-integration-tests-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Setup Node.js
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
diff --git a/.github/workflows/publish-crates.yml b/.github/workflows/publish-crates.yml
index c54365c1..4cd3400f 100644
--- a/.github/workflows/publish-crates.yml
+++ b/.github/workflows/publish-crates.yml
@@ -80,7 +80,7 @@ jobs:
             echo "Invalid branch name: $RELEASE_BRANCH" >&2; exit 1;
           }
           case "$RELEASE_BRANCH" in
-            main|master|HEAD|-*|*..*|*" "*)
+            main|master|dev|HEAD|-*|*..*|*" "*)
               echo "Disallowed branch name: $RELEASE_BRANCH" >&2; exit 1 ;;
           esac
 
diff --git a/.github/workflows/stress-test.yml b/.github/workflows/stress-test.yml
index 6b58556b..8c36e4de 100644
--- a/.github/workflows/stress-test.yml
+++ b/.github/workflows/stress-test.yml
@@ -91,8 +91,8 @@ jobs:
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           workspaces: .
-          shared-key: "bulletin-cache-stress-test"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-stress-test-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Build stress test binary
         run: cargo build --release -p bulletin-stress-test
diff --git a/.github/workflows/zombienet-tests.yml b/.github/workflows/zombienet-tests.yml
index 0680c8b6..d0f3a848 100644
--- a/.github/workflows/zombienet-tests.yml
+++ b/.github/workflows/zombienet-tests.yml
@@ -2,11 +2,11 @@ name: Zombienet SDK Tests
 
 on:
   workflow_dispatch:
-  # Populate the binaries cache under main's scope so PRs can read it.
+  # Populate the binaries cache under the dev scope so PRs can read it.
   push:
-    branches: [main]
+    branches: [main, dev]
   pull_request:
-    branches: [main]
+    branches: [main, dev]
     # `labeled` lets the sync suite kick in when its label is added mid-PR.
     types: [opened, synchronize, reopened, labeled]
 
@@ -96,8 +96,8 @@ jobs:
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           workspaces: .
-          shared-key: "bulletin-cache-zombienet-auto-renew-tests-${{ matrix.runtime.name }}"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-zombienet-auto-renew-tests-${{ matrix.runtime.name }}-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Restore bulletin chain specs cache
         uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5
@@ -154,8 +154,8 @@ jobs:
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           workspaces: .
-          shared-key: "bulletin-cache-zombienet-sync-tests-${{ matrix.runtime.name }}"
-          save-if: ${{ github.ref == 'refs/heads/main' }}
+          shared-key: "bulletin-cache-zombienet-sync-tests-${{ matrix.runtime.name }}-${{ github.base_ref || github.ref_name }}"
+          save-if: ${{ github.ref == 'refs/heads/main' || github.ref == 'refs/heads/dev' }}
 
       - name: Restore bulletin chain specs cache
         uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5