diff --git a/.github/workflows/build-tests.yml b/.github/workflows/build-tests.yml
index b7bbc02..bbf4ae4 100644
--- a/.github/workflows/build-tests.yml
+++ b/.github/workflows/build-tests.yml
@@ -8,6 +8,13 @@ name: Build Tests
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -50,6 +57,12 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  # The OVOS ecosystem ships pre-1.0 alphas and relies on prerelease floor-pins
+  # (pkg>=X.Ya1). pip honoured those transitively; uv's default mode does not when
+  # a package also has stable releases (e.g. ovos-PHAL's ovos-phal-plugin-ipgeo
+  # >=0.1.9a1, which has a coexisting stable 0.1.7). Allow prereleases so the
+  # floor-pins resolve as they did under pip — version caps still bound them.
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   build_tests:
diff --git a/.github/workflows/coverage-pages.yml b/.github/workflows/coverage-pages.yml
index a0d09ad..810fbf6 100644
--- a/.github/workflows/coverage-pages.yml
+++ b/.github/workflows/coverage-pages.yml
@@ -8,6 +8,13 @@ name: Coverage Pages
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -43,6 +50,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   coverage_pages:
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 8c672d5..356466e 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -2,6 +2,13 @@ name: Coverage Report
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -86,6 +93,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   coverage:
diff --git a/.github/workflows/downstream-check.yml b/.github/workflows/downstream-check.yml
index 58864cf..c6be69f 100644
--- a/.github/workflows/downstream-check.yml
+++ b/.github/workflows/downstream-check.yml
@@ -2,6 +2,13 @@ name: Downstream Dependency Check
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       package_name:
         type: string
         required: true
@@ -38,6 +45,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   check_downstream:
diff --git a/.github/workflows/intent-case-tests.yml b/.github/workflows/intent-case-tests.yml
index 438c2bc..e4109df 100644
--- a/.github/workflows/intent-case-tests.yml
+++ b/.github/workflows/intent-case-tests.yml
@@ -21,6 +21,13 @@ name: Intent-Case Tests
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -110,6 +117,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   intent_case_tests:
diff --git a/.github/workflows/license-check.yml b/.github/workflows/license-check.yml
index 97cb03d..98d98cf 100644
--- a/.github/workflows/license-check.yml
+++ b/.github/workflows/license-check.yml
@@ -19,6 +19,13 @@ name: License Check
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -69,6 +76,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   license_tests:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 3b2eb22..c7ca7b1 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -4,6 +4,13 @@ name: Lint
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -35,6 +42,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   lint:
diff --git a/.github/workflows/locale-check.yml b/.github/workflows/locale-check.yml
index ab3cc41..fc7fd61 100644
--- a/.github/workflows/locale-check.yml
+++ b/.github/workflows/locale-check.yml
@@ -5,6 +5,13 @@ name: Locale Build Check
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -25,6 +32,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   locale_check:
diff --git a/.github/workflows/opm-check.yml b/.github/workflows/opm-check.yml
index 832333b..c475b86 100644
--- a/.github/workflows/opm-check.yml
+++ b/.github/workflows/opm-check.yml
@@ -9,6 +9,13 @@ name: OPM Plugin Check
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -76,6 +83,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   opm_check:
diff --git a/.github/workflows/ovoscope.yml b/.github/workflows/ovoscope.yml
index ca28d67..3f0d3fa 100644
--- a/.github/workflows/ovoscope.yml
+++ b/.github/workflows/ovoscope.yml
@@ -28,6 +28,13 @@ name: Ovoscope End-to-End Tests
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -134,6 +141,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   ovoscope:
diff --git a/.github/workflows/pip-audit.yml b/.github/workflows/pip-audit.yml
index c628890..9c41583 100644
--- a/.github/workflows/pip-audit.yml
+++ b/.github/workflows/pip-audit.yml
@@ -8,6 +8,13 @@ name: Pip Audit
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -52,6 +59,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   pip_audit:
diff --git a/.github/workflows/python-support.yml b/.github/workflows/python-support.yml
index fda6ca4..3bb7ce4 100644
--- a/.github/workflows/python-support.yml
+++ b/.github/workflows/python-support.yml
@@ -12,6 +12,13 @@ name: Python Support
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -52,6 +59,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   check_compatibility:
diff --git a/.github/workflows/spec-lint.yml b/.github/workflows/spec-lint.yml
index 0833e32..b76cb90 100644
--- a/.github/workflows/spec-lint.yml
+++ b/.github/workflows/spec-lint.yml
@@ -8,6 +8,13 @@ name: Spec Lint
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -50,6 +57,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   spec_lint:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index de6c8ab..4ff5fac 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,6 +16,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: "allow"  # OVOS ships pre-1.0 alphas; resolve prerelease floor-pins like pip did
 
 jobs:
   test:
diff --git a/.github/workflows/tts-intelligibility.yml b/.github/workflows/tts-intelligibility.yml
index 35ede2f..25a0909 100644
--- a/.github/workflows/tts-intelligibility.yml
+++ b/.github/workflows/tts-intelligibility.yml
@@ -18,6 +18,13 @@ name: TTS Intelligibility
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -75,6 +82,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   tts-intelligibility:
diff --git a/.github/workflows/type-check.yml b/.github/workflows/type-check.yml
index 1f48f60..fd5de6f 100644
--- a/.github/workflows/type-check.yml
+++ b/.github/workflows/type-check.yml
@@ -7,6 +7,13 @@ name: Type Check
 on:
   workflow_call:
     inputs:
+      uv_prerelease:
+        type: string
+        default: "allow"
+        description: >
+          uv prerelease resolution mode (allow | if-necessary | explicit |
+          disallow). Defaults to "allow": the OVOS ecosystem ships pre-1.0 alphas
+          and relies on prerelease floor-pins resolving the way pip did.
       runner:
         type: string
         default: "ubuntu-latest"
@@ -53,6 +60,7 @@ on:
 # uv installs into the setup-python interpreter (no venv on the runner)
 env:
   UV_SYSTEM_PYTHON: "1"
+  UV_PRERELEASE: ${{ inputs.uv_prerelease }}
 
 jobs:
   type_check: