diff --git a/.github/workflows/frontend-ci.yml b/.github/workflows/frontend-ci.yml
index 1d1abd1..b389197 100644
--- a/.github/workflows/frontend-ci.yml
+++ b/.github/workflows/frontend-ci.yml
@@ -6,10 +6,6 @@ on:
   merge_group:
     branches: [main]
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
 jobs:
   frontend-ci:
     name: frontend-ci
diff --git a/.github/workflows/lambda-tests.yml b/.github/workflows/lambda-tests.yml
index f483ea6..a343c1c 100644
--- a/.github/workflows/lambda-tests.yml
+++ b/.github/workflows/lambda-tests.yml
@@ -7,10 +7,6 @@ on:
   merge_group:
     branches: [main]
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
 jobs:
   discover:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/pr-closed.yml b/.github/workflows/pr-closed.yml
index 15a315b..e010814 100644
--- a/.github/workflows/pr-closed.yml
+++ b/.github/workflows/pr-closed.yml
@@ -4,10 +4,6 @@ on:
   pull_request:
     types: [closed]
 
-concurrency:
-  group: pr-closed-${{ github.event.pull_request.number }}
-  cancel-in-progress: true
-
 permissions:
   contents: write
   pull-requests: read
diff --git a/.github/workflows/pr-review-status.yml b/.github/workflows/pr-review-status.yml
index 032a3a1..7900429 100644
--- a/.github/workflows/pr-review-status.yml
+++ b/.github/workflows/pr-review-status.yml
@@ -4,10 +4,6 @@ on:
   pull_request_review:
     types: [submitted]
 
-concurrency:
-  group: pr-review-status-${{ github.event.pull_request.number }}
-  cancel-in-progress: true
-
 permissions:
   contents: write
   pull-requests: read
diff --git a/.github/workflows/pr-reviewer-assign.yml b/.github/workflows/pr-reviewer-assign.yml
index c7f51a2..ae88924 100644
--- a/.github/workflows/pr-reviewer-assign.yml
+++ b/.github/workflows/pr-reviewer-assign.yml
@@ -4,10 +4,6 @@ on:
   pull_request:
     types: [opened, ready_for_review, reopened]
 
-concurrency:
-  group: pr-assign-rotation
-  cancel-in-progress: false
-
 permissions:
   contents: write
   pull-requests: write
diff --git a/.github/workflows/pr-reviewer-remind.yml b/.github/workflows/pr-reviewer-remind.yml
index 3c72ee6..9b54953 100644
--- a/.github/workflows/pr-reviewer-remind.yml
+++ b/.github/workflows/pr-reviewer-remind.yml
@@ -7,10 +7,6 @@ on:
     - cron: '0 */6 * * *'
   workflow_dispatch: {}
 
-concurrency:
-  group: pr-reminders
-  cancel-in-progress: false
-
 permissions:
   contents: write
   pull-requests: read
diff --git a/.github/workflows/terraform-plan.yml b/.github/workflows/terraform-plan.yml
index 6877eba..b0fb95e 100644
--- a/.github/workflows/terraform-plan.yml
+++ b/.github/workflows/terraform-plan.yml
@@ -9,10 +9,6 @@ on:
     branches:
       - main
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
 jobs:
   detect-changes:
     if: github.event_name != 'merge_group'
diff --git a/infrastructure/github/README.md b/infrastructure/github/README.md
index 0943ce3..1287488 100644
--- a/infrastructure/github/README.md
+++ b/infrastructure/github/README.md
@@ -26,6 +26,7 @@ No modules.
 | [github_actions_secret.aws_secret_access_key](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
 | [github_actions_secret.cognito_client_id](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
 | [github_actions_secret.cognito_user_pool_id](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
+| [github_actions_secret.gh_pat](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
 | [github_actions_secret.infisical_client_id](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
 | [github_actions_secret.infisical_client_secret](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
 | [github_actions_secret.slack_bot_token](https://registry.terraform.io/providers/integrations/github/latest/docs/resources/actions_secret) | resource |
@@ -52,8 +53,8 @@ No modules.
 | <a name="input_infisical_workspace_id"></a> [infisical\_workspace\_id](#input\_infisical\_workspace\_id) | n/a | `string` | `"d1ee8b80-118c-4daf-ae84-31da43261b76"` | no |
 | <a name="input_repository_collaborators"></a> [repository\_collaborators](#input\_repository\_collaborators) | List of GitHub users to add as collaborators | <pre>list(object({<br>    username   = string<br>    permission = string<br>  }))</pre> | `[]` | no |
 | <a name="input_review_bot_always_reviewer_slack"></a> [review\_bot\_always\_reviewer\_slack](#input\_review\_bot\_always\_reviewer\_slack) | Slack member ID of the person who reviews every PR | `string` | `"U07NGFM1QKE"` | no |
-| <a name="input_review_bot_github_to_slack"></a> [review\_bot\_github\_to\_slack](#input\_review\_bot\_github\_to\_slack) | Map of GitHub username → Slack member ID (U0…) | `map(string)` | <pre>{<br>  "Rayna-Yu": "U083UGSCU7P",<br>  "bhuvanh66": "U084JKT1GG2",<br>  "denniwang": "U07F8LM2X61",<br>  "mehanana": "U084AMND8FK",<br>  "nourshoreibah": "U07NGFM1QKE",<br>  "saumyapalk23": "U09EYETUEGP",<br>  "tsudhakar87": "U08NFFSJEG1"<br>}</pre> | no |
-| <a name="input_review_bot_roster"></a> [review\_bot\_roster](#input\_review\_bot\_roster) | Ordered list of GitHub usernames for round-robin review assignment | `list(string)` | <pre>[<br>  "denniwang",<br>  "bhuvanh66",<br>  "Rayna-Yu",<br>  "mehanana",<br>  "tsudhakar87",<br>  "saumyapalk23"<br>]</pre> | no |
+| <a name="input_review_bot_github_to_slack"></a> [review\_bot\_github\_to\_slack](#input\_review\_bot\_github\_to\_slack) | Map of GitHub username → Slack member ID (U0…) | `map(string)` | <pre>{<br>  "Rayna-Yu": "U083UGSCU7P",<br>  "Vaibhav978": "U0A6HAVCRMJ",<br>  "bhuvanh66": "U084JKT1GG2",<br>  "denniwang": "U07F8LM2X61",<br>  "mehanana": "U084AMND8FK",<br>  "nourshoreibah": "U07NGFM1QKE",<br>  "saumyapalk23": "U09EYETUEGP",<br>  "tsudhakar87": "U08NFFSJEG1"<br>}</pre> | no |
+| <a name="input_review_bot_roster"></a> [review\_bot\_roster](#input\_review\_bot\_roster) | Ordered list of GitHub usernames for round-robin review assignment | `list(string)` | <pre>[<br>  "denniwang",<br>  "bhuvanh66",<br>  "Rayna-Yu",<br>  "mehanana",<br>  "tsudhakar87",<br>  "saumyapalk23",<br>  "Vaibhav978"<br>]</pre> | no |
 | <a name="input_review_bot_slack_channel_id"></a> [review\_bot\_slack\_channel\_id](#input\_review\_bot\_slack\_channel\_id) | Slack channel ID where review notifications are posted | `string` | `"C0ADQN0B6F8"` | no |
 
 ## Outputs
diff --git a/infrastructure/github/variables.tf b/infrastructure/github/variables.tf
index d6da349..3679a27 100644
--- a/infrastructure/github/variables.tf
+++ b/infrastructure/github/variables.tf
@@ -17,7 +17,7 @@ variable "repository_collaborators" {
 variable "review_bot_roster" {
   description = "Ordered list of GitHub usernames for round-robin review assignment"
   type        = list(string)
-  default     = ["denniwang", "bhuvanh66", "Rayna-Yu", "mehanana", "tsudhakar87", "saumyapalk23"]
+  default     = ["denniwang", "bhuvanh66", "Rayna-Yu", "mehanana", "tsudhakar87", "saumyapalk23", "Vaibhav978"]
 }
 
 variable "review_bot_github_to_slack" {
@@ -31,6 +31,7 @@ variable "review_bot_github_to_slack" {
     "tsudhakar87"   = "U08NFFSJEG1"
     "saumyapalk23"  = "U09EYETUEGP"
     "nourshoreibah" = "U07NGFM1QKE"
+    "Vaibhav978"    = "U0A6HAVCRMJ"
   }
 }