diff --git a/workflows/tri-debug.yml b/workflows/tri-debug.yml
index 4579e3c..a25c152 100644
--- a/workflows/tri-debug.yml
+++ b/workflows/tri-debug.yml
@@ -19,8 +19,11 @@ steps:
     model: general
     prompt: |
       DISPATCH, DO NOT ANSWER. Invoke the Agent tool
-      with a non-Claude general-tier subagent (prefer a Gemini-backed agent, or a
-      different external than smart-diagnosis used). In non-Claude hosts, use a
+      with a non-Claude general-tier subagent (prefer `agy:agy-review` for the
+      Google-model perspective; fall back to a Gemini-backed agent, or
+      `codex:codex-rescue` if neither is available — but prefer a different
+      external than smart-diagnosis used to preserve model diversity). In
+      non-Claude hosts, use a
       distinct delegated subagent or external CLI diagnostician when
       available. Report verbatim. Stop if none
       available. Subagent prompt: "Debug this issue: {{input}}. What's
diff --git a/workflows/tri-dispatch.yml b/workflows/tri-dispatch.yml
index 373b5aa..5564ed4 100644
--- a/workflows/tri-dispatch.yml
+++ b/workflows/tri-dispatch.yml
@@ -17,8 +17,10 @@ steps:
     model: general
     prompt: |
       DISPATCH, DO NOT ANSWER. Invoke the Agent tool with a non-Claude
-      general-tier subagent (prefer Gemini; at minimum distinct from
-      smart-take's subagent). In non-Claude hosts, use a distinct delegated
+      general-tier subagent (prefer `agy:agy-review` (Google AGY); fall
+      back to a Gemini-backed subagent, or `codex:codex-rescue` if neither
+      is available — at minimum distinct from smart-take's subagent).
+      In non-Claude hosts, use a distinct delegated
       subagent or external CLI respondent when available. Report verbatim. Stop if none available.
       Subagent prompt: "{{input}} Give a clear, balanced answer."
 
diff --git a/workflows/tri-review.yml b/workflows/tri-review.yml
index 532fc8c..673af04 100644
--- a/workflows/tri-review.yml
+++ b/workflows/tri-review.yml
@@ -16,9 +16,12 @@ steps:
       DISPATCH, DO NOT ANSWER. This is tri-review — the whole point is
       model diversity. You (the calling model) must NOT write this review
       yourself. Invoke the Agent tool with a non-Claude subagent
-      (`codex:codex-rescue` is the standard smart-tier
-      external reviewer; any available Gemini or external senior reviewer
-      also qualifies). In non-Claude hosts, use the equivalent delegated
+      (`codex:codex-rescue` is the standard smart-tier external reviewer;
+      any other senior external reviewer also qualifies. Note:
+      `agy:agy-review` (Google AGY) is reserved for the general-tier slot
+      below — claiming it here would leave general-tier without a
+      distinct model and break the tri-* property). In non-Claude hosts,
+      use the equivalent delegated
       subagent or external CLI reviewer if available.
       Pass the diff from {{gather}} and report the subagent's verdict
       verbatim. If no external-model subagent is available, stop and tell
@@ -31,10 +34,12 @@ steps:
     model: general
     prompt: |
       DISPATCH, DO NOT ANSWER. Invoke the Agent tool with a non-Claude
-      general-tier reviewer (e.g. a Gemini-backed reviewer plugin, or
-      `codex:codex-rescue` if no Gemini is available — but prefer a
+      general-tier reviewer. Prefer `agy:agy-review` (Google AGY /
+      Antigravity CLI — the current Google reviewer; Gemini CLI is being
+      retired). Fall back to a Gemini-backed reviewer plugin, or
+      `codex:codex-rescue` if neither is available — but prefer a
       different model than review-smart used, or the tri-* property is
-      lost). In non-Claude hosts, use a distinct delegated subagent or
+      lost. In non-Claude hosts, use a distinct delegated subagent or
       external CLI reviewer when available. Report verbatim. Stop if no external
       subagent is available.
       The subagent prompt should be: "Review this code for quality and
diff --git a/workflows/tri-security.yml b/workflows/tri-security.yml
index a976e8e..107f182 100644
--- a/workflows/tri-security.yml
+++ b/workflows/tri-security.yml
@@ -29,8 +29,10 @@ steps:
     model: general
     prompt: |
       DISPATCH, DO NOT ANSWER. Invoke the Agent tool
-      with a non-Claude general-tier subagent (prefer Gemini; at minimum distinct from
-      audit-injection's subagent). In non-Claude hosts, use a distinct delegated
+      with a non-Claude general-tier subagent (prefer `agy:agy-review` (Google
+      AGY); fall back to a Gemini-backed subagent, or `codex:codex-rescue` if
+      neither is available — at minimum distinct from audit-injection's
+      subagent). In non-Claude hosts, use a distinct delegated
       subagent or external CLI reviewer when available. Report verbatim. Stop if none
       available. Subagent prompt: "Security audit — authentication and
       authorization. Diff: {{gather}}. Check for: broken auth, missing