diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 0fee6da94..4d6be4441 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -58,7 +58,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Setup Rust
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           components: rustfmt, clippy
 
diff --git a/.github/workflows/broca-feature-matrix.yml b/.github/workflows/broca-feature-matrix.yml
index 62859263d..82b899e7d 100644
--- a/.github/workflows/broca-feature-matrix.yml
+++ b/.github/workflows/broca-feature-matrix.yml
@@ -45,7 +45,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
diff --git a/.github/workflows/broca-full-measurements.yml b/.github/workflows/broca-full-measurements.yml
index 7806ce3f3..1ccd4de49 100644
--- a/.github/workflows/broca-full-measurements.yml
+++ b/.github/workflows/broca-full-measurements.yml
@@ -49,7 +49,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
diff --git a/.github/workflows/broca-measurements.yml b/.github/workflows/broca-measurements.yml
index 40f98f28c..bfdd3eaed 100644
--- a/.github/workflows/broca-measurements.yml
+++ b/.github/workflows/broca-measurements.yml
@@ -37,7 +37,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 23e0b6fcc..35dfd6b4a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           components: rustfmt
 
@@ -77,7 +77,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -100,7 +100,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           components: clippy
 
@@ -167,7 +167,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -201,7 +201,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -230,7 +230,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Install cargo-nextest
         uses: taiki-e/install-action@nextest
@@ -266,7 +266,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry
         uses: actions/cache@v4
@@ -307,7 +307,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -363,7 +363,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry
         uses: actions/cache@v4
@@ -400,7 +400,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry
         uses: actions/cache@v4
@@ -456,7 +456,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -541,7 +541,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -595,7 +595,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -678,7 +678,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -782,7 +782,7 @@ jobs:
 
       - name: Install Rust toolchain
         if: steps.should_run.outputs.run == 'true'
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         if: steps.should_run.outputs.run == 'true'
@@ -861,7 +861,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -920,7 +920,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain + wasm32 target
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
         with:
           targets: wasm32-unknown-unknown
 
@@ -997,7 +997,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry
         uses: actions/cache@v4
@@ -1041,7 +1041,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
       - name: Install cargo-cyclonedx
         run: cargo install cargo-cyclonedx
       - name: Generate SBOM
@@ -1128,7 +1128,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -1177,7 +1177,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -1211,7 +1211,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -1254,7 +1254,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -1301,7 +1301,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
@@ -1345,7 +1345,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
diff --git a/.github/workflows/coding-agent-quality.yml b/.github/workflows/coding-agent-quality.yml
index 0bb942f70..cd12b5374 100644
--- a/.github/workflows/coding-agent-quality.yml
+++ b/.github/workflows/coding-agent-quality.yml
@@ -51,7 +51,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
diff --git a/.github/workflows/coding-backend-regression.yml b/.github/workflows/coding-backend-regression.yml
index 7c344746d..7d5f9df97 100644
--- a/.github/workflows/coding-backend-regression.yml
+++ b/.github/workflows/coding-backend-regression.yml
@@ -41,7 +41,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install Rust toolchain
-        uses: dtolnay/rust-toolchain@1.96.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache cargo registry and target
         uses: actions/cache@v4
diff --git a/.github/workflows/communication-evidence.yml b/.github/workflows/communication-evidence.yml
index d00f31d0d..df21ebdf4 100644
--- a/.github/workflows/communication-evidence.yml
+++ b/.github/workflows/communication-evidence.yml
@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@1.96.0
+      - uses: dtolnay/rust-toolchain@1.100.0
       - uses: Swatinem/rust-cache@v2
       - name: Test communication contracts and CLI
         run: cargo test -p symthaea-communication