Pin Fullsend references to upstream commits

Pin the reusable workflow calls and harness bases to the
current upstream commits. Keep the SHA-256 fragments
matched to the pinned harness files.

`git diff --check` passes; both harness hashes match.

Co-Authored-By: gpt-6-luna <noreply@openai.com>

Author: st3penta

.fullsend/customized/harness/retro.yaml

@@ -15,7 +15,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 # Derived retro harness: retain upstream analysis and append the Conforma gate.
-base: https://raw.githubusercontent.com/fullsend-ai/agents/69ade99f1b61bea99aee98e604384e26ff7b45e0/harness/retro.yaml#sha256=6d858c90cc6f1c7526d2b36b8cd47df079d1332ac7184bb70dfb1587e9cb04d8
+base: https://raw.githubusercontent.com/fullsend-ai/agents/ce2eedd097dcccf17e29f4a7cd337ec4d95d7194/harness/retro.yaml#sha256=510c52c1f662c876e81f13e5208302abaad4dd8b8d3705fdef21b908fa63d551
 
 skills:
     - customized/skills/retro-filing-policy

.fullsend/customized/harness/review.yaml

@@ -14,7 +14,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-base: https://raw.githubusercontent.com/fullsend-ai/agents/440d3e3c1a4a770309e37c2fd2826dfc88297d99/harness/review.yaml#sha256=c259d94e7c50e5e01cb0fa38df2b70765f8e35beb7ad8bf006c9193a05589917
+base: https://raw.githubusercontent.com/fullsend-ai/agents/ce2eedd097dcccf17e29f4a7cd337ec4d95d7194/harness/review.yaml#sha256=3e9302d8143fcfd93df8e4542162776e98893c8ef367450679e2ffa89e5b0c53
 
 # Fullsend's bool merge treats an omitted readonly_repo as false, so carry
 # forward the upstream read-only guarantee explicitly.

.github/workflows/fullsend.yaml

@@ -62,7 +62,7 @@ jobs:
       issues: write
       packages: read
       pull-requests: write
-    uses: fullsend-ai/fullsend/.github/workflows/reusable-dispatch.yml@311c1ef517dcf51fba3167c701f188e856beaa7d
+    uses: fullsend-ai/fullsend/.github/workflows/reusable-dispatch.yml@ea66a0a1e5ecb0a08780042a6b283d104fcd02e3
     with:
       event_action: ${{ github.event.action }}
       install_mode: per-repo

.github/workflows/prioritize.yml

@@ -49,7 +49,7 @@ concurrency:
 
 jobs:
   prioritize:
-    uses: fullsend-ai/fullsend/.github/workflows/reusable-prioritize.yml@311c1ef517dcf51fba3167c701f188e856beaa7d
+    uses: fullsend-ai/fullsend/.github/workflows/reusable-prioritize.yml@ea66a0a1e5ecb0a08780042a6b283d104fcd02e3
     with:
       event_type: ${{ inputs.event_type }}
       source_repo: ${{ inputs.source_repo }}