diff --git a/docs_build/dev/BUILD_PR.md b/docs_build/dev/BUILD_PR.md
index 2c940b3d8..2f3f00812 100644
--- a/docs_build/dev/BUILD_PR.md
+++ b/docs_build/dev/BUILD_PR.md
@@ -1,43 +1,39 @@
-# PR_26177_DELTA_054-random-utility
+# PR_26177_DELTA_055-random-seed-enhancements
 
 ## Purpose
 
-Add a nondeterministic `Random` utility with the same public convenience API shape as `RandomSeed`.
+Enhance `RandomSeed` with matching procedural convenience methods.
 
 ## Source Of Truth
 
-This `BUILD_PR.md`, `PLAN_PR.md`, the user request, and `docs_build/dev/ProjectInstructions.zip` are the source of truth for `PR_26177_DELTA_054-random-utility`.
+This `BUILD_PR.md`, `PLAN_PR.md`, the user request, and `docs_build/dev/ProjectInstructions.zip` are the source of truth for `PR_26177_DELTA_055-random-seed-enhancements`.
 
 ## OWNER Override And Team Assignment
 
-OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_054-random-utility`.
+OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_055-random-seed-enhancements`.
 
 Team Delta owns Shared JS, runtime utilities, technical debt remediation, and runtime test coverage.
 
 ## Stack
 
-- Base branch: `PR_26177_DELTA_053-random-shared-helpers`
-- This PR depends on the internal random helper module from PR_053.
+- Base branch: `PR_26177_DELTA_054-random-utility`
+- This PR depends on the shared helper module from PR_053 and the stack context from PR_054.
 
 ## Exact Scope
 
-- Add `Random` utility.
-- Include:
-  - `Random.next()`
-  - `Random.nextInt(min, max)`
-  - `Random.nextFloat(min, max)`
-  - `Random.pick(array)`
-  - `Random.shuffle(array)`
-  - `Random.chance(percent)`
-  - `Random.weightedPick(weightedItems)`
-  - `Random.uuid()`
-- Prefer `crypto.getRandomValues()` when available.
-- Use `Math.random()` only as compatibility fallback.
-- No deterministic seed support in `Random`.
-- No browser storage.
+- Update `RandomSeed` to use shared helper logic where appropriate.
+- Add:
+  - `shuffle(array)`
+  - `chance(percent)`
+  - `weightedPick(weightedItems)`
+  - `saveState()`
+  - `restoreState(state)`
+- Preserve existing `RandomSeed` sequence compatibility.
+- Same seed must still reproduce same sequence.
+- Reseeding must still reproduce same sequence.
+- Add targeted unit tests for new methods.
+- No adoption changes in existing game logic.
 - No UI changes.
-- Add JSDoc.
-- Add targeted unit tests.
 - Create required Codex reports under `docs_build/dev/reports/`.
 - Create repo-structured delta ZIP under `tmp/`.
 
@@ -47,22 +43,21 @@ Team Delta owns Shared JS, runtime utilities, technical debt remediation, and ru
 - `docs_build/dev/BUILD_PR.md`
 - `docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md`
 - `docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md`
-- `src/shared/math/Random.js`
-- `tests/shared/Random.test.mjs`
-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md`
-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md`
-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md`
-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md`
-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md`
-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md`
+- `src/shared/math/RandomSeed.js`
+- `tests/shared/RandomSeed.test.mjs`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md`
 - `docs_build/dev/reports/codex_review.diff`
 - `docs_build/dev/reports/codex_changed_files.txt`
 
 ## Out Of Scope
 
-- No deterministic seed support in `Random`.
+- No seeded `next()` algorithm changes.
 - No existing game logic adoption changes.
-- No existing `Math.random()` call-site replacements.
 - No UI changes.
 - No browser storage changes.
 - No API changes.
@@ -75,9 +70,9 @@ Team Delta owns Shared JS, runtime utilities, technical debt remediation, and ru
 Run exactly:
 
 ```powershell
-node ./scripts/run-node-test-files.mjs tests/shared/Random.test.mjs tests/shared/RandomHelpers.test.mjs
-node --check src/shared/math/Random.js
-node --check tests/shared/Random.test.mjs
+node ./scripts/run-node-test-files.mjs tests/shared/RandomSeed.test.mjs tests/shared/RandomHelpers.test.mjs
+node --check src/shared/math/RandomSeed.js
+node --check tests/shared/RandomSeed.test.mjs
 git diff --check
 ```
 
@@ -88,5 +83,5 @@ Playwright is not required because this PR does not change UI or browser runtime
 Create repo-structured delta ZIP:
 
 ```text
-tmp/PR_26177_DELTA_054-random-utility_delta.zip
+tmp/PR_26177_DELTA_055-random-seed-enhancements_delta.zip
 ```
diff --git a/docs_build/dev/PLAN_PR.md b/docs_build/dev/PLAN_PR.md
index c2b19c33e..87120e264 100644
--- a/docs_build/dev/PLAN_PR.md
+++ b/docs_build/dev/PLAN_PR.md
@@ -1,46 +1,42 @@
-# PLAN_PR: PR_26177_DELTA_054-random-utility
+# PLAN_PR: PR_26177_DELTA_055-random-seed-enhancements
 
 ## Purpose
 
-Add a nondeterministic `Random` utility with the same public convenience API shape as `RandomSeed`.
+Enhance `RandomSeed` with matching procedural convenience methods.
 
 ## Owner And Assignment
 
 - Team: Delta
-- OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_054-random-utility`.
-- Stack base: `PR_26177_DELTA_053-random-shared-helpers`.
+- OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_055-random-seed-enhancements`.
+- Stack base: `PR_26177_DELTA_054-random-utility`.
 
 ## Scope
 
-- Add `Random` utility.
-- Include:
-  - `Random.next()`
-  - `Random.nextInt(min, max)`
-  - `Random.nextFloat(min, max)`
-  - `Random.pick(array)`
-  - `Random.shuffle(array)`
-  - `Random.chance(percent)`
-  - `Random.weightedPick(weightedItems)`
-  - `Random.uuid()`
-- Prefer `crypto.getRandomValues()` when available.
-- Use `Math.random()` only as compatibility fallback.
-- No deterministic seed support in `Random`.
-- No browser storage.
+- Update `RandomSeed` to use shared helper logic where appropriate.
+- Add:
+  - `shuffle(array)`
+  - `chance(percent)`
+  - `weightedPick(weightedItems)`
+  - `saveState()`
+  - `restoreState(state)`
+- Preserve existing `RandomSeed` sequence compatibility.
+- Same seed must still reproduce same sequence.
+- Reseeding must still reproduce same sequence.
+- Add targeted unit tests for new methods.
+- No adoption changes in existing game logic.
 - No UI changes.
-- Add JSDoc.
-- Add targeted unit tests.
 
 ## Implementation Plan
 
-1. Add `src/shared/math/Random.js`.
-2. Reuse internal helper functions from `src/shared/math/randomHelpers.js`.
-3. Add `tests/shared/Random.test.mjs`.
-4. Validate crypto preference, Math fallback, utility methods, UUID shape, and absence of seed API.
+1. Update `src/shared/math/RandomSeed.js` to reuse `randomHelpers.js` for procedural helper methods.
+2. Keep the existing seeded `next()` algorithm unchanged.
+3. Add state save/restore methods.
+4. Extend `tests/shared/RandomSeed.test.mjs` with sequence compatibility, new method, and state tests.
 5. Produce required PR reports and repo-structured ZIP.
 
 ## Acceptance Criteria
 
-- `Random` exposes the required static convenience methods.
-- `Random` does not expose deterministic seed support.
-- `Random` uses `crypto.getRandomValues()` when available.
-- `Math.random()` is used only when crypto random values are unavailable.
+- Existing seeded sequence values remain compatible.
+- Same seed and reseeding behavior remain deterministic.
+- New procedural methods use the same seeded random stream.
+- State save/restore resumes the sequence from the saved point.
diff --git a/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md b/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
index a546aa1d5..9dcd7244d 100644
--- a/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
+++ b/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
@@ -31,7 +31,7 @@ If a team has no assignment, no active branch, and no active PR, it is inactive
 | Team Alfa | none | none | none | Available | Active ownership lane |
 | Team Bravo | none | none | none | Available | Active ownership lane |
 | Team Charlie | none | none | none | Available | Active ownership lane |
-| Team Delta | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | Active | OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_054-random-utility |
+| Team Delta | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | Active | OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_055-random-seed-enhancements |
 | Team Golf | none | none | none | Available | Replacement active ownership lane for retired Team Gamma |
 | Team OWNER | none | none | none | Available | Governance Phase 1 complete |
 
diff --git a/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md b/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
index ed14e49b5..3b49412c4 100644
--- a/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
+++ b/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
@@ -7,7 +7,7 @@
 | Team Alfa | none | none | none | Available |
 | Team Bravo | none | none | none | Available |
 | Team Charlie | none | none | none | Available |
-| Team Delta | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | Active |
+| Team Delta | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | Active |
 | Team Golf | none | none | none | Available |
 | Team OWNER | none | none | none | Available |
 
@@ -50,13 +50,13 @@ Current OWNER clarification:
 
 Status: Active
 
-Active assignment: PR_26177_DELTA_054-random-utility.
+Active assignment: PR_26177_DELTA_055-random-seed-enhancements.
 
-Active branch: PR_26177_DELTA_054-random-utility.
+Active branch: PR_26177_DELTA_055-random-seed-enhancements.
 
-Active PR: PR_26177_DELTA_054-random-utility.
+Active PR: PR_26177_DELTA_055-random-seed-enhancements.
 
-OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_054-random-utility.
+OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_055-random-seed-enhancements.
 
 ## Team Bravo
 
diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md
new file mode 100644
index 000000000..06cb0f4d3
--- /dev/null
+++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md
@@ -0,0 +1,50 @@
+# PR_26177_DELTA_055-random-seed-enhancements
+
+Date: 2026-06-26
+Team: Delta
+Scope: RandomSeed procedural enhancements and targeted unit tests
+Status: PASS
+
+## Summary
+
+- Updated `RandomSeed` to use shared helper logic for `nextInt`, `nextFloat`, and `pick`.
+- Added seeded procedural methods: `shuffle`, `chance`, and `weightedPick`.
+- Added `saveState()` and `restoreState(state)` for deterministic sequence checkpointing.
+- Preserved the existing `RandomSeed.next()` algorithm.
+- Added a hardcoded compatibility check for the existing `RandomSeed(42)` sequence.
+- Verified same-seed and reseeding reproducibility still pass.
+- Added targeted tests for the new methods and state restore behavior.
+- No existing game logic adoption changes or UI changes were made.
+
+## Branch Validation
+
+PASS. Branch `PR_26177_DELTA_055-random-seed-enhancements` was created from `PR_26177_DELTA_054-random-utility`.
+
+## Changed Files
+
+- `docs_build/dev/PLAN_PR.md`
+- `docs_build/dev/BUILD_PR.md`
+- `docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md`
+- `docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md`
+- `src/shared/math/RandomSeed.js`
+- `tests/shared/RandomSeed.test.mjs`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md`
+- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md`
+- `docs_build/dev/reports/codex_changed_files.txt`
+- `docs_build/dev/reports/codex_review.diff`
+
+## Validation
+
+- PASS: `node ./scripts/run-node-test-files.mjs tests/shared/RandomSeed.test.mjs tests/shared/RandomHelpers.test.mjs`
+- PASS: `node --check src/shared/math/RandomSeed.js`
+- PASS: `node --check tests/shared/RandomSeed.test.mjs`
+- PASS: `git diff --check`
+- SKIP: Playwright was not run because this PR does not change UI or browser runtime flows.
+
+## Artifact
+
+- `tmp/PR_26177_DELTA_055-random-seed-enhancements_delta.zip`
diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md
new file mode 100644
index 000000000..76dc5c9ae
--- /dev/null
+++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md
@@ -0,0 +1,15 @@
+# PR_26177_DELTA_055-random-seed-enhancements Branch Validation
+
+Status: PASS
+
+## Start Gates
+
+- PASS: PR_055 branch was created from `PR_26177_DELTA_054-random-utility`.
+- PASS: Stack base was clean before branch creation.
+- PASS: Branch name is `PR_26177_DELTA_055-random-seed-enhancements`.
+
+## Scope Confirmation
+
+- PASS: Work is assigned to Team Delta.
+- PASS: Work is limited to `RandomSeed` procedural enhancements, targeted tests, PR docs, reports, and ZIP packaging.
+- PASS: No existing game logic adoption changes, UI changes, API changes, database changes, or unrelated cleanup were made.
diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md
new file mode 100644
index 000000000..b5eb1a3c5
--- /dev/null
+++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md
@@ -0,0 +1,11 @@
+# PR_26177_DELTA_055-random-seed-enhancements Instruction Compliance Checklist
+
+| Instruction | Status | Notes |
+|---|---:|---|
+| Continue stacked Random PR sequence | PASS | Branch was created from PR_054. |
+| Keep one PR purpose only | PASS | Scope is RandomSeed enhancements. |
+| Preserve sequence compatibility | PASS | Existing `RandomSeed(42)` sequence is asserted in tests. |
+| No adoption changes in existing game logic | PASS | No call sites were changed. |
+| No UI changes | PASS | No UI files changed. |
+| Produce required reports | PASS | Reports were added under `docs_build/dev/reports/`. |
+| Produce repo-structured ZIP under `tmp/` | PASS | ZIP path is `tmp/PR_26177_DELTA_055-random-seed-enhancements_delta.zip`. |
diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md
new file mode 100644
index 000000000..441a079e9
--- /dev/null
+++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md
@@ -0,0 +1,11 @@
+# PR_26177_DELTA_055-random-seed-enhancements Manual Validation Notes
+
+Status: PASS
+
+Manual review confirmed:
+
+- `RandomSeed.next()` was not changed.
+- The hardcoded `RandomSeed(42)` sequence remains compatible with PR_052 behavior.
+- New procedural methods consume the same seeded stream through shared helpers.
+- `saveState()` and `restoreState(state)` are in-memory and serializable; no browser storage was added.
+- No UI, API, database, or existing game logic adoption files changed.
diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md
new file mode 100644
index 000000000..a65ee9a91
--- /dev/null
+++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md
@@ -0,0 +1,16 @@
+# PR_26177_DELTA_055-random-seed-enhancements Requirement Checklist
+
+| Requirement | Status | Notes |
+|---|---:|---|
+| Update `RandomSeed` to use shared helper logic where appropriate | PASS | `nextInt`, `nextFloat`, `pick`, and new methods use `randomHelpers.js`. |
+| Add `shuffle(array)` | PASS | Added seeded shuffle method. |
+| Add `chance(percent)` | PASS | Added seeded chance method. |
+| Add `weightedPick(weightedItems)` | PASS | Added seeded weighted pick method. |
+| Add `saveState()` | PASS | Added serializable state capture. |
+| Add `restoreState(state)` | PASS | Added state restore with validation. |
+| Preserve existing `RandomSeed` sequence compatibility | PASS | Hardcoded `RandomSeed(42)` sequence check passes. |
+| Same seed still reproduces same sequence | PASS | Existing targeted test still passes. |
+| Reseeding still reproduces same sequence | PASS | Existing targeted test still passes. |
+| Add targeted unit tests for new methods | PASS | Extended `tests/shared/RandomSeed.test.mjs`. |
+| No adoption changes in existing game logic | PASS | No game logic call sites changed. |
+| No UI changes | PASS | No UI files changed. |
diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md
new file mode 100644
index 000000000..d2203f234
--- /dev/null
+++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md
@@ -0,0 +1,24 @@
+# PR_26177_DELTA_055-random-seed-enhancements Validation Lane
+
+Status: PASS
+
+## Commands
+
+```powershell
+node ./scripts/run-node-test-files.mjs tests/shared/RandomSeed.test.mjs tests/shared/RandomHelpers.test.mjs
+node --check src/shared/math/RandomSeed.js
+node --check tests/shared/RandomSeed.test.mjs
+git diff --check
+```
+
+## Results
+
+- PASS: `tests/shared/RandomSeed.test.mjs`
+- PASS: `tests/shared/RandomHelpers.test.mjs`
+- PASS: `src/shared/math/RandomSeed.js` syntax check
+- PASS: `tests/shared/RandomSeed.test.mjs` syntax check
+- PASS: `git diff --check`
+
+## Playwright
+
+SKIP. Playwright was not run because this PR does not change UI or browser runtime flows.
diff --git a/docs_build/dev/reports/codex_changed_files.txt b/docs_build/dev/reports/codex_changed_files.txt
index a74a7832a..25c946493 100644
--- a/docs_build/dev/reports/codex_changed_files.txt
+++ b/docs_build/dev/reports/codex_changed_files.txt
@@ -2,13 +2,13 @@ docs_build/dev/BUILD_PR.md
 docs_build/dev/PLAN_PR.md
 docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
 docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
-docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md
-docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md
-docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md
-docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md
-docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md
-docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md
+docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md
+docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md
+docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md
+docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md
+docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md
+docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md
 docs_build/dev/reports/codex_changed_files.txt
 docs_build/dev/reports/codex_review.diff
-src/shared/math/Random.js
-tests/shared/Random.test.mjs
+src/shared/math/RandomSeed.js
+tests/shared/RandomSeed.test.mjs
diff --git a/docs_build/dev/reports/codex_review.diff b/docs_build/dev/reports/codex_review.diff
index 7360627e0..6ab211802 100644
--- a/docs_build/dev/reports/codex_review.diff
+++ b/docs_build/dev/reports/codex_review.diff
@@ -1,212 +1,219 @@
 diff --git a/docs_build/dev/BUILD_PR.md b/docs_build/dev/BUILD_PR.md
-index 0a265576e..2c940b3d8 100644
+index 2c940b3d8..2f3f00812 100644
 --- a/docs_build/dev/BUILD_PR.md
 +++ b/docs_build/dev/BUILD_PR.md
-@@ -1,31 +1,42 @@
--# PR_26177_DELTA_053-random-shared-helpers
-+# PR_26177_DELTA_054-random-utility
+@@ -1,43 +1,39 @@
+-# PR_26177_DELTA_054-random-utility
++# PR_26177_DELTA_055-random-seed-enhancements
 
  ## Purpose
 
--Create shared internal helper logic for random utility operations.
-+Add a nondeterministic `Random` utility with the same public convenience API shape as `RandomSeed`.
+-Add a nondeterministic `Random` utility with the same public convenience API shape as `RandomSeed`.
++Enhance `RandomSeed` with matching procedural convenience methods.
 
  ## Source Of Truth
 
--This `BUILD_PR.md`, `PLAN_PR.md`, the user request, and `docs_build/dev/ProjectInstructions.zip` are the source of truth for `PR_26177_DELTA_053-random-shared-helpers`.
-+This `BUILD_PR.md`, `PLAN_PR.md`, the user request, and `docs_build/dev/ProjectInstructions.zip` are the source of truth for `PR_26177_DELTA_054-random-utility`.
+-This `BUILD_PR.md`, `PLAN_PR.md`, the user request, and `docs_build/dev/ProjectInstructions.zip` are the source of truth for `PR_26177_DELTA_054-random-utility`.
++This `BUILD_PR.md`, `PLAN_PR.md`, the user request, and `docs_build/dev/ProjectInstructions.zip` are the source of truth for `PR_26177_DELTA_055-random-seed-enhancements`.
 
  ## OWNER Override And Team Assignment
 
--OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_053-random-shared-helpers`.
-+OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_054-random-utility`.
+-OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_054-random-utility`.
++OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_055-random-seed-enhancements`.
 
  Team Delta owns Shared JS, runtime utilities, technical debt remediation, and runtime test coverage.
 
-+## Stack
-+
-+- Base branch: `PR_26177_DELTA_053-random-shared-helpers`
-+- This PR depends on the internal random helper module from PR_053.
-+
+ ## Stack
+
+-- Base branch: `PR_26177_DELTA_053-random-shared-helpers`
+-- This PR depends on the internal random helper module from PR_053.
++- Base branch: `PR_26177_DELTA_054-random-utility`
++- This PR depends on the shared helper module from PR_053 and the stack context from PR_054.
+
  ## Exact Scope
 
--- Add internal/shared helper functions for:
--  - `nextInt(randomNext, min, max)`
--  - `nextFloat(randomNext, min, max)`
--  - `pick(randomNext, array)`
--  - `shuffle(randomNext, array)`
--  - `chance(randomNext, percent)`
--  - `weightedPick(randomNext, weightedItems)`
--- Helper must consume a `randomNext` function returning float `>= 0` and `< 1`.
--- Do not expose this as Creator-facing API.
--- Do not change existing `RandomSeed` behavior.
-+- Add `Random` utility.
-+- Include:
-+  - `Random.next()`
-+  - `Random.nextInt(min, max)`
-+  - `Random.nextFloat(min, max)`
-+  - `Random.pick(array)`
-+  - `Random.shuffle(array)`
-+  - `Random.chance(percent)`
-+  - `Random.weightedPick(weightedItems)`
-+  - `Random.uuid()`
-+- Prefer `crypto.getRandomValues()` when available.
-+- Use `Math.random()` only as compatibility fallback.
-+- No deterministic seed support in `Random`.
-+- No browser storage.
-+- No UI changes.
-+- Add JSDoc.
- - Add targeted unit tests.
+-- Add `Random` utility.
+-- Include:
+-  - `Random.next()`
+-  - `Random.nextInt(min, max)`
+-  - `Random.nextFloat(min, max)`
+-  - `Random.pick(array)`
+-  - `Random.shuffle(array)`
+-  - `Random.chance(percent)`
+-  - `Random.weightedPick(weightedItems)`
+-  - `Random.uuid()`
+-- Prefer `crypto.getRandomValues()` when available.
+-- Use `Math.random()` only as compatibility fallback.
+-- No deterministic seed support in `Random`.
+-- No browser storage.
++- Update `RandomSeed` to use shared helper logic where appropriate.
++- Add:
++  - `shuffle(array)`
++  - `chance(percent)`
++  - `weightedPick(weightedItems)`
++  - `saveState()`
++  - `restoreState(state)`
++- Preserve existing `RandomSeed` sequence compatibility.
++- Same seed must still reproduce same sequence.
++- Reseeding must still reproduce same sequence.
++- Add targeted unit tests for new methods.
++- No adoption changes in existing game logic.
+ - No UI changes.
+-- Add JSDoc.
+-- Add targeted unit tests.
  - Create required Codex reports under `docs_build/dev/reports/`.
  - Create repo-structured delta ZIP under `tmp/`.
-@@ -36,21 +47,21 @@ Team Delta owns Shared JS, runtime utilities, technical debt remediation, and ru
+
+@@ -47,22 +43,21 @@ Team Delta owns Shared JS, runtime utilities, technical debt remediation, and ru
  - `docs_build/dev/BUILD_PR.md`
  - `docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md`
  - `docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md`
--- `src/shared/math/randomHelpers.js`
--- `tests/shared/RandomHelpers.test.mjs`
--- `docs_build/dev/reports/PR_26177_DELTA_053-random-shared-helpers.md`
--- `docs_build/dev/reports/PR_26177_DELTA_053-random-shared-helpers_branch-validation.md`
--- `docs_build/dev/reports/PR_26177_DELTA_053-random-shared-helpers_requirement-checklist.md`
--- `docs_build/dev/reports/PR_26177_DELTA_053-random-shared-helpers_validation-lane.md`
--- `docs_build/dev/reports/PR_26177_DELTA_053-random-shared-helpers_manual-validation-notes.md`
--- `docs_build/dev/reports/PR_26177_DELTA_053-random-shared-helpers_instruction-compliance-checklist.md`
-+- `src/shared/math/Random.js`
-+- `tests/shared/Random.test.mjs`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md`
+-- `src/shared/math/Random.js`
+-- `tests/shared/Random.test.mjs`
+-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md`
+-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md`
+-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md`
+-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md`
+-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md`
+-- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md`
++- `src/shared/math/RandomSeed.js`
++- `tests/shared/RandomSeed.test.mjs`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md`
  - `docs_build/dev/reports/codex_review.diff`
  - `docs_build/dev/reports/codex_changed_files.txt`
 
  ## Out Of Scope
 
--- No Creator-facing API exposure.
--- No existing `RandomSeed` behavior changes.
-+- No deterministic seed support in `Random`.
-+- No existing game logic adoption changes.
- - No existing `Math.random()` call-site replacements.
+-- No deterministic seed support in `Random`.
++- No seeded `next()` algorithm changes.
+ - No existing game logic adoption changes.
+-- No existing `Math.random()` call-site replacements.
  - No UI changes.
  - No browser storage changes.
-@@ -64,9 +75,9 @@ Team Delta owns Shared JS, runtime utilities, technical debt remediation, and ru
+ - No API changes.
+@@ -75,9 +70,9 @@ Team Delta owns Shared JS, runtime utilities, technical debt remediation, and ru
  Run exactly:
 
  ```powershell
--node ./scripts/run-node-test-files.mjs tests/shared/RandomHelpers.test.mjs tests/shared/RandomSeed.test.mjs
--node --check src/shared/math/randomHelpers.js
--node --check tests/shared/RandomHelpers.test.mjs
-+node ./scripts/run-node-test-files.mjs tests/shared/Random.test.mjs tests/shared/RandomHelpers.test.mjs
-+node --check src/shared/math/Random.js
-+node --check tests/shared/Random.test.mjs
+-node ./scripts/run-node-test-files.mjs tests/shared/Random.test.mjs tests/shared/RandomHelpers.test.mjs
+-node --check src/shared/math/Random.js
+-node --check tests/shared/Random.test.mjs
++node ./scripts/run-node-test-files.mjs tests/shared/RandomSeed.test.mjs tests/shared/RandomHelpers.test.mjs
++node --check src/shared/math/RandomSeed.js
++node --check tests/shared/RandomSeed.test.mjs
  git diff --check
  ```
 
-@@ -77,5 +88,5 @@ Playwright is not required because this PR does not change UI or browser runtime
+@@ -88,5 +83,5 @@ Playwright is not required because this PR does not change UI or browser runtime
  Create repo-structured delta ZIP:
 
  ```text
--tmp/PR_26177_DELTA_053-random-shared-helpers_delta.zip
-+tmp/PR_26177_DELTA_054-random-utility_delta.zip
+-tmp/PR_26177_DELTA_054-random-utility_delta.zip
++tmp/PR_26177_DELTA_055-random-seed-enhancements_delta.zip
  ```
 diff --git a/docs_build/dev/PLAN_PR.md b/docs_build/dev/PLAN_PR.md
-index 55fef9a6a..c2b19c33e 100644
+index c2b19c33e..87120e264 100644
 --- a/docs_build/dev/PLAN_PR.md
 +++ b/docs_build/dev/PLAN_PR.md
-@@ -1,40 +1,46 @@
--# PLAN_PR: PR_26177_DELTA_053-random-shared-helpers
-+# PLAN_PR: PR_26177_DELTA_054-random-utility
+@@ -1,46 +1,42 @@
+-# PLAN_PR: PR_26177_DELTA_054-random-utility
++# PLAN_PR: PR_26177_DELTA_055-random-seed-enhancements
 
  ## Purpose
 
--Create shared internal helper logic for random utility operations.
-+Add a nondeterministic `Random` utility with the same public convenience API shape as `RandomSeed`.
+-Add a nondeterministic `Random` utility with the same public convenience API shape as `RandomSeed`.
++Enhance `RandomSeed` with matching procedural convenience methods.
 
  ## Owner And Assignment
 
  - Team: Delta
--- OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_053-random-shared-helpers`.
--- Ownership fit: Team Delta owns Shared JS, runtime utilities, technical debt remediation, and runtime test coverage.
-+- OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_054-random-utility`.
-+- Stack base: `PR_26177_DELTA_053-random-shared-helpers`.
+-- OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_054-random-utility`.
+-- Stack base: `PR_26177_DELTA_053-random-shared-helpers`.
++- OWNER override approved: Continue Team Delta random utility stack with `PR_26177_DELTA_055-random-seed-enhancements`.
++- Stack base: `PR_26177_DELTA_054-random-utility`.
 
  ## Scope
 
--- Add internal/shared helper functions for:
--  - `nextInt(randomNext, min, max)`
--  - `nextFloat(randomNext, min, max)`
--  - `pick(randomNext, array)`
--  - `shuffle(randomNext, array)`
--  - `chance(randomNext, percent)`
--  - `weightedPick(randomNext, weightedItems)`
--- Helper functions must consume a `randomNext` function returning a float `>= 0` and `< 1`.
--- Do not expose these helpers as Creator-facing API.
--- Do not change existing `RandomSeed` behavior.
-+- Add `Random` utility.
-+- Include:
-+  - `Random.next()`
-+  - `Random.nextInt(min, max)`
-+  - `Random.nextFloat(min, max)`
-+  - `Random.pick(array)`
-+  - `Random.shuffle(array)`
-+  - `Random.chance(percent)`
-+  - `Random.weightedPick(weightedItems)`
-+  - `Random.uuid()`
-+- Prefer `crypto.getRandomValues()` when available.
-+- Use `Math.random()` only as compatibility fallback.
-+- No deterministic seed support in `Random`.
-+- No browser storage.
-+- No UI changes.
-+- Add JSDoc.
- - Add targeted unit tests.
+-- Add `Random` utility.
+-- Include:
+-  - `Random.next()`
+-  - `Random.nextInt(min, max)`
+-  - `Random.nextFloat(min, max)`
+-  - `Random.pick(array)`
+-  - `Random.shuffle(array)`
+-  - `Random.chance(percent)`
+-  - `Random.weightedPick(weightedItems)`
+-  - `Random.uuid()`
+-- Prefer `crypto.getRandomValues()` when available.
+-- Use `Math.random()` only as compatibility fallback.
+-- No deterministic seed support in `Random`.
+-- No browser storage.
++- Update `RandomSeed` to use shared helper logic where appropriate.
++- Add:
++  - `shuffle(array)`
++  - `chance(percent)`
++  - `weightedPick(weightedItems)`
++  - `saveState()`
++  - `restoreState(state)`
++- Preserve existing `RandomSeed` sequence compatibility.
++- Same seed must still reproduce same sequence.
++- Reseeding must still reproduce same sequence.
++- Add targeted unit tests for new methods.
++- No adoption changes in existing game logic.
+ - No UI changes.
+-- Add JSDoc.
+-- Add targeted unit tests.
 
  ## Implementation Plan
 
--1. Add `src/shared/math/randomHelpers.js`.
--2. Add `tests/shared/RandomHelpers.test.mjs`.
--3. Validate helper behavior and input guards with targeted unit tests.
--4. Preserve current `RandomSeed` implementation and tests unchanged.
-+1. Add `src/shared/math/Random.js`.
-+2. Reuse internal helper functions from `src/shared/math/randomHelpers.js`.
-+3. Add `tests/shared/Random.test.mjs`.
-+4. Validate crypto preference, Math fallback, utility methods, UUID shape, and absence of seed API.
+-1. Add `src/shared/math/Random.js`.
+-2. Reuse internal helper functions from `src/shared/math/randomHelpers.js`.
+-3. Add `tests/shared/Random.test.mjs`.
+-4. Validate crypto preference, Math fallback, utility methods, UUID shape, and absence of seed API.
++1. Update `src/shared/math/RandomSeed.js` to reuse `randomHelpers.js` for procedural helper methods.
++2. Keep the existing seeded `next()` algorithm unchanged.
++3. Add state save/restore methods.
++4. Extend `tests/shared/RandomSeed.test.mjs` with sequence compatibility, new method, and state tests.
  5. Produce required PR reports and repo-structured ZIP.
 
  ## Acceptance Criteria
 
--- Helpers use only the supplied `randomNext` source.
--- Integer, float, pick, shuffle, chance, and weighted pick operations are covered.
--- Invalid `randomNext`, ranges, arrays, percentages, and weighted item inputs reject predictably.
--- Existing `RandomSeed` behavior remains unchanged.
-+- `Random` exposes the required static convenience methods.
-+- `Random` does not expose deterministic seed support.
-+- `Random` uses `crypto.getRandomValues()` when available.
-+- `Math.random()` is used only when crypto random values are unavailable.
+-- `Random` exposes the required static convenience methods.
+-- `Random` does not expose deterministic seed support.
+-- `Random` uses `crypto.getRandomValues()` when available.
+-- `Math.random()` is used only when crypto random values are unavailable.
++- Existing seeded sequence values remain compatible.
++- Same seed and reseeding behavior remain deterministic.
++- New procedural methods use the same seeded random stream.
++- State save/restore resumes the sequence from the saved point.
 diff --git a/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md b/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
-index cf0a714b8..a546aa1d5 100644
+index a546aa1d5..9dcd7244d 100644
 --- a/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
 +++ b/docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md
 @@ -31,7 +31,7 @@ If a team has no assignment, no active branch, and no active PR, it is inactive
  | Team Alfa | none | none | none | Available | Active ownership lane |
  | Team Bravo | none | none | none | Available | Active ownership lane |
  | Team Charlie | none | none | none | Available | Active ownership lane |
--| Team Delta | PR_26177_DELTA_053-random-shared-helpers | PR_26177_DELTA_053-random-shared-helpers | PR_26177_DELTA_053-random-shared-helpers | Active | OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_053-random-shared-helpers |
-+| Team Delta | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | Active | OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_054-random-utility |
+-| Team Delta | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | Active | OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_054-random-utility |
++| Team Delta | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | Active | OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_055-random-seed-enhancements |
  | Team Golf | none | none | none | Available | Replacement active ownership lane for retired Team Gamma |
  | Team OWNER | none | none | none | Available | Governance Phase 1 complete |
 
 diff --git a/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md b/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
-index bd334569a..ed14e49b5 100644
+index ed14e49b5..3b49412c4 100644
 --- a/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
 +++ b/docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md
 @@ -7,7 +7,7 @@
  | Team Alfa | none | none | none | Available |
  | Team Bravo | none | none | none | Available |
  | Team Charlie | none | none | none | Available |
--| Team Delta | PR_26177_DELTA_053-random-shared-helpers | PR_26177_DELTA_053-random-shared-helpers | PR_26177_DELTA_053-random-shared-helpers | Active |
-+| Team Delta | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | Active |
+-| Team Delta | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | PR_26177_DELTA_054-random-utility | Active |
++| Team Delta | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | PR_26177_DELTA_055-random-seed-enhancements | Active |
  | Team Golf | none | none | none | Available |
  | Team OWNER | none | none | none | Available |
 
@@ -214,46 +221,250 @@ index bd334569a..ed14e49b5 100644
 
  Status: Active
 
--Active assignment: PR_26177_DELTA_053-random-shared-helpers.
-+Active assignment: PR_26177_DELTA_054-random-utility.
+-Active assignment: PR_26177_DELTA_054-random-utility.
++Active assignment: PR_26177_DELTA_055-random-seed-enhancements.
 
--Active branch: PR_26177_DELTA_053-random-shared-helpers.
-+Active branch: PR_26177_DELTA_054-random-utility.
+-Active branch: PR_26177_DELTA_054-random-utility.
++Active branch: PR_26177_DELTA_055-random-seed-enhancements.
 
--Active PR: PR_26177_DELTA_053-random-shared-helpers.
-+Active PR: PR_26177_DELTA_054-random-utility.
+-Active PR: PR_26177_DELTA_054-random-utility.
++Active PR: PR_26177_DELTA_055-random-seed-enhancements.
 
--OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_053-random-shared-helpers.
-+OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_054-random-utility.
+-OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_054-random-utility.
++OWNER override approved: Continue Team Delta random utility stack with PR_26177_DELTA_055-random-seed-enhancements.
 
  ## Team Bravo
-diff --git a/docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md
+
+diff --git a/src/shared/math/RandomSeed.js b/src/shared/math/RandomSeed.js
+index 19d948644..606bc0738 100644
+--- a/src/shared/math/RandomSeed.js
++++ b/src/shared/math/RandomSeed.js
+@@ -1,3 +1,12 @@
++import {
++  chance as randomChance,
++  nextFloat as randomNextFloat,
++  nextInt as randomNextInt,
++  pick as randomPick,
++  shuffle as randomShuffle,
++  weightedPick as randomWeightedPick,
++} from "./randomHelpers.js";
++
+ const UINT32_RANGE = 0x100000000;
+ const FNV_OFFSET_BASIS = 0x811c9dc5;
+ const FNV_PRIME = 0x01000193;
+@@ -14,21 +23,6 @@ function normalizeSeedValue(value) {
+   return hash >>> 0;
+ }
+
+-function assertFiniteNumber(value, name) {
+-  if (!Number.isFinite(value)) {
+-    throw new TypeError(`${name} must be a finite number.`);
+-  }
+-}
+-
+-function assertOrderedRange(min, max) {
+-  assertFiniteNumber(min, "min");
+-  assertFiniteNumber(max, "max");
+-
+-  if (max < min) {
+-    throw new RangeError("max must be greater than or equal to min.");
+-  }
+-}
+-
+ /**
+  * Deterministic seeded pseudo-random number generator for repeatable game and
+  * tool workflows. `RandomSeed` is intentionally opt-in and does not replace
+@@ -76,15 +70,7 @@ export class RandomSeed {
+    * @returns {number} A deterministic integer inside the requested range.
+    */
+   nextInt(min, max) {
+-    assertOrderedRange(min, max);
+-    const lower = Math.ceil(min);
+-    const upper = Math.floor(max);
+-
+-    if (upper < lower) {
+-      throw new RangeError("integer range must include at least one integer.");
+-    }
+-
+-    return Math.floor(this.next() * (upper - lower + 1)) + lower;
++    return randomNextInt(() => this.next(), min, max);
+   }
+
+   /**
+@@ -95,8 +81,7 @@ export class RandomSeed {
+    * @returns {number} A deterministic floating-point number inside the range.
+    */
+   nextFloat(min, max) {
+-    assertOrderedRange(min, max);
+-    return min + this.next() * (max - min);
++    return randomNextFloat(() => this.next(), min, max);
+   }
+
+   /**
+@@ -107,15 +92,65 @@ export class RandomSeed {
+    * @returns {T} The selected array item.
+    */
+   pick(array) {
+-    if (!Array.isArray(array)) {
+-      throw new TypeError("array must be an array.");
+-    }
++    return randomPick(() => this.next(), array);
++  }
++
++  /**
++   * Returns a deterministically shuffled copy of an array.
++   *
++   * @template T
++   * @param {T[]} array Source array to shuffle.
++   * @returns {T[]} Shuffled copy.
++   */
++  shuffle(array) {
++    return randomShuffle(() => this.next(), array);
++  }
+
+-    if (array.length === 0) {
+-      throw new RangeError("array must contain at least one item.");
++  /**
++   * Returns true when the deterministic roll falls within the percent chance.
++   *
++   * @param {number} percent Percent chance from 0 through 100.
++   * @returns {boolean} Whether the chance roll succeeds.
++   */
++  chance(percent) {
++    return randomChance(() => this.next(), percent);
++  }
++
++  /**
++   * Selects one deterministic weighted item.
++   *
++   * @template T
++   * @param {{item?: T, value?: T, weight: number}[]} weightedItems Weighted item entries.
++   * @returns {T} Selected item.
++   */
++  weightedPick(weightedItems) {
++    return randomWeightedPick(() => this.next(), weightedItems);
++  }
++
++  /**
++   * Captures the current generator state for later restoration.
++   *
++   * @returns {{state: number}} Serializable generator state.
++   */
++  saveState() {
++    return { state: this._state >>> 0 };
++  }
++
++  /**
++   * Restores a generator state previously returned by `saveState()`.
++   *
++   * @param {{state: number}} state Saved generator state.
++   * @returns {RandomSeed} This generator instance for chaining.
++   */
++  restoreState(state) {
++    const stateValue = Number(state?.state);
++
++    if (!Number.isInteger(stateValue) || stateValue < 0 || stateValue > 0xffffffff) {
++      throw new RangeError("state.state must be an unsigned 32-bit integer.");
+     }
+
+-    return array[this.nextInt(0, array.length - 1)];
++    this._state = stateValue >>> 0;
++    return this;
+   }
+ }
+
+diff --git a/tests/shared/RandomSeed.test.mjs b/tests/shared/RandomSeed.test.mjs
+index b61a44157..23b5f6459 100644
+--- a/tests/shared/RandomSeed.test.mjs
++++ b/tests/shared/RandomSeed.test.mjs
+@@ -16,6 +16,15 @@ export function run() {
+   const second = new RandomSeed("level-1");
+   assert.deepEqual(takeSequence(first, 5), takeSequence(second, 5));
+
++  assert.deepEqual(takeSequence(new RandomSeed(42), 6), [
++    0.3077305785845965,
++    0.3676118436269462,
++    0.23133554426021874,
++    0.01758907549083233,
++    0.009130497695878148,
++    0.2082449474837631,
++  ]);
++
+   first.seed("level-1");
+   second.seed("different-level");
+   assert.notDeepEqual(takeSequence(first, 5), takeSequence(second, 5));
+@@ -46,10 +55,44 @@ export function run() {
+     Array.from({ length: 8 }, () => pickerB.pick(pickSource))
+   );
+
++  const shuffleSource = ["a", "b", "c", "d"];
++  const shuffleA = new RandomSeed("shuffle-seed");
++  const shuffleB = new RandomSeed("shuffle-seed");
++  assert.deepEqual(shuffleA.shuffle(shuffleSource), shuffleB.shuffle(shuffleSource));
++  assert.deepEqual(shuffleSource, ["a", "b", "c", "d"]);
++
++  const chanceA = new RandomSeed("chance-seed");
++  const chanceB = new RandomSeed("chance-seed");
++  assert.deepEqual(
++    Array.from({ length: 8 }, () => chanceA.chance(35)),
++    Array.from({ length: 8 }, () => chanceB.chance(35))
++  );
++
++  const weightedItems = [
++    { item: "common", weight: 7 },
++    { item: "rare", weight: 3 },
++  ];
++  const weightedA = new RandomSeed("weighted-seed");
++  const weightedB = new RandomSeed("weighted-seed");
++  assert.deepEqual(
++    Array.from({ length: 8 }, () => weightedA.weightedPick(weightedItems)),
++    Array.from({ length: 8 }, () => weightedB.weightedPick(weightedItems))
++  );
++
++  const stateSeed = new RandomSeed("state-seed");
++  stateSeed.next();
++  const savedState = stateSeed.saveState();
++  const expectedAfterState = takeSequence(stateSeed, 4);
++  assert.equal(stateSeed.restoreState(savedState), stateSeed);
++  assert.deepEqual(takeSequence(stateSeed, 4), expectedAfterState);
++
+   assert.throws(() => new RandomSeed("empty").pick([]), RangeError);
+   assert.throws(() => new RandomSeed("bad-array").pick("not-array"), TypeError);
+   assert.throws(() => new RandomSeed("bad-int").nextInt(5, 2), RangeError);
+   assert.throws(() => new RandomSeed("bad-float").nextFloat(0, Number.POSITIVE_INFINITY), TypeError);
++  assert.throws(() => new RandomSeed("bad-chance").chance(101), RangeError);
++  assert.throws(() => new RandomSeed("bad-weight").weightedPick([{ item: "none", weight: 0 }]), RangeError);
++  assert.throws(() => new RandomSeed("bad-state").restoreState({ state: -1 }), RangeError);
+ }
+
+ if (import.meta.url === `file://${process.argv[1]}`) {
+diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md
 new file mode 100644
-index 000000000..0d1641316
+index 000000000..06cb0f4d3
 --- /dev/null
-+++ b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md
++++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md
 @@ -0,0 +1,50 @@
-+# PR_26177_DELTA_054-random-utility
++# PR_26177_DELTA_055-random-seed-enhancements
 +
 +Date: 2026-06-26
 +Team: Delta
-+Scope: Nondeterministic shared Random utility and targeted unit tests
++Scope: RandomSeed procedural enhancements and targeted unit tests
 +Status: PASS
 +
 +## Summary
 +
-+- Added `Random` as a nondeterministic shared random utility in `src/shared/math/Random.js`.
-+- Added static convenience methods matching the public shape requested: `next`, `nextInt`, `nextFloat`, `pick`, `shuffle`, `chance`, `weightedPick`, and `uuid`.
-+- Reused internal helper logic from PR_053.
-+- Preferred `crypto.getRandomValues()` when available.
-+- Used `Math.random()` only as compatibility fallback when crypto random values are unavailable.
-+- Did not add deterministic seed support to `Random`.
-+- Added targeted unit tests in `tests/shared/Random.test.mjs`.
-+- No browser storage, UI, API, database, or existing game logic adoption changes were made.
++- Updated `RandomSeed` to use shared helper logic for `nextInt`, `nextFloat`, and `pick`.
++- Added seeded procedural methods: `shuffle`, `chance`, and `weightedPick`.
++- Added `saveState()` and `restoreState(state)` for deterministic sequence checkpointing.
++- Preserved the existing `RandomSeed.next()` algorithm.
++- Added a hardcoded compatibility check for the existing `RandomSeed(42)` sequence.
++- Verified same-seed and reseeding reproducibility still pass.
++- Added targeted tests for the new methods and state restore behavior.
++- No existing game logic adoption changes or UI changes were made.
 +
 +## Branch Validation
 +
-+PASS. Branch `PR_26177_DELTA_054-random-utility` was created from `PR_26177_DELTA_053-random-shared-helpers`.
++PASS. Branch `PR_26177_DELTA_055-random-seed-enhancements` was created from `PR_26177_DELTA_054-random-utility`.
 +
 +## Changed Files
 +
@@ -261,411 +472,132 @@ index 000000000..0d1641316
 +- `docs_build/dev/BUILD_PR.md`
 +- `docs_build/dev/ProjectInstructions/team_assignments/TEAM_ASSIGNMENTS.md`
 +- `docs_build/dev/ProjectInstructions/team_assignments/ACTIVE_TEAM_REGISTRY.md`
-+- `src/shared/math/Random.js`
-+- `tests/shared/Random.test.mjs`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md`
-+- `docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md`
++- `src/shared/math/RandomSeed.js`
++- `tests/shared/RandomSeed.test.mjs`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md`
++- `docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md`
 +- `docs_build/dev/reports/codex_changed_files.txt`
 +- `docs_build/dev/reports/codex_review.diff`
 +
 +## Validation
 +
-+- PASS: `node ./scripts/run-node-test-files.mjs tests/shared/Random.test.mjs tests/shared/RandomHelpers.test.mjs`
-+- PASS: `node --check src/shared/math/Random.js`
-+- PASS: `node --check tests/shared/Random.test.mjs`
++- PASS: `node ./scripts/run-node-test-files.mjs tests/shared/RandomSeed.test.mjs tests/shared/RandomHelpers.test.mjs`
++- PASS: `node --check src/shared/math/RandomSeed.js`
++- PASS: `node --check tests/shared/RandomSeed.test.mjs`
 +- PASS: `git diff --check`
 +- SKIP: Playwright was not run because this PR does not change UI or browser runtime flows.
 +
 +## Artifact
 +
-+- `tmp/PR_26177_DELTA_054-random-utility_delta.zip`
-diff --git a/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md
++- `tmp/PR_26177_DELTA_055-random-seed-enhancements_delta.zip`
+diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md
 new file mode 100644
-index 000000000..8915ce567
+index 000000000..76dc5c9ae
 --- /dev/null
-+++ b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_branch-validation.md
++++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_branch-validation.md
 @@ -0,0 +1,15 @@
-+# PR_26177_DELTA_054-random-utility Branch Validation
++# PR_26177_DELTA_055-random-seed-enhancements Branch Validation
 +
 +Status: PASS
 +
 +## Start Gates
 +
-+- PASS: PR_054 branch was created from `PR_26177_DELTA_053-random-shared-helpers`.
++- PASS: PR_055 branch was created from `PR_26177_DELTA_054-random-utility`.
 +- PASS: Stack base was clean before branch creation.
-+- PASS: Branch name is `PR_26177_DELTA_054-random-utility`.
++- PASS: Branch name is `PR_26177_DELTA_055-random-seed-enhancements`.
 +
 +## Scope Confirmation
 +
 +- PASS: Work is assigned to Team Delta.
-+- PASS: Work is limited to nondeterministic Random utility, targeted tests, PR docs, reports, and ZIP packaging.
-+- PASS: No deterministic seed support, UI, browser storage, API, database, or unrelated cleanup changes were made.
-diff --git a/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md
++- PASS: Work is limited to `RandomSeed` procedural enhancements, targeted tests, PR docs, reports, and ZIP packaging.
++- PASS: No existing game logic adoption changes, UI changes, API changes, database changes, or unrelated cleanup were made.
+diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md
 new file mode 100644
-index 000000000..4c8ffc09a
+index 000000000..b5eb1a3c5
 --- /dev/null
-+++ b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_instruction-compliance-checklist.md
++++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_instruction-compliance-checklist.md
 @@ -0,0 +1,11 @@
-+# PR_26177_DELTA_054-random-utility Instruction Compliance Checklist
++# PR_26177_DELTA_055-random-seed-enhancements Instruction Compliance Checklist
 +
 +| Instruction | Status | Notes |
 +|---|---:|---|
-+| Continue stacked Random PR sequence | PASS | Branch was created from PR_053. |
-+| Keep one PR purpose only | PASS | Scope is nondeterministic Random utility. |
-+| Use shared helper logic from PR_053 | PASS | Random delegates convenience methods to `randomHelpers.js`. |
-+| Do not add deterministic seed support | PASS | No seed API or seed state was added. |
-+| No UI/browser storage/API/database changes | PASS | No such files or behaviors changed. |
++| Continue stacked Random PR sequence | PASS | Branch was created from PR_054. |
++| Keep one PR purpose only | PASS | Scope is RandomSeed enhancements. |
++| Preserve sequence compatibility | PASS | Existing `RandomSeed(42)` sequence is asserted in tests. |
++| No adoption changes in existing game logic | PASS | No call sites were changed. |
++| No UI changes | PASS | No UI files changed. |
 +| Produce required reports | PASS | Reports were added under `docs_build/dev/reports/`. |
-+| Produce repo-structured ZIP under `tmp/` | PASS | ZIP path is `tmp/PR_26177_DELTA_054-random-utility_delta.zip`. |
-diff --git a/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md
++| Produce repo-structured ZIP under `tmp/` | PASS | ZIP path is `tmp/PR_26177_DELTA_055-random-seed-enhancements_delta.zip`. |
+diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md
 new file mode 100644
-index 000000000..e7a29b57a
+index 000000000..441a079e9
 --- /dev/null
-+++ b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_manual-validation-notes.md
++++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_manual-validation-notes.md
 @@ -0,0 +1,11 @@
-+# PR_26177_DELTA_054-random-utility Manual Validation Notes
++# PR_26177_DELTA_055-random-seed-enhancements Manual Validation Notes
 +
 +Status: PASS
 +
 +Manual review confirmed:
 +
-+- `Random` is nondeterministic and does not support seeding.
-+- `Random` prefers `crypto.getRandomValues()` and falls back to `Math.random()` only when crypto random values are unavailable.
-+- Public methods match the requested convenience API shape.
-+- `Random` does not use browser storage and is not wired into UI or existing game logic.
-+- Tests mock crypto and Math fallback sources and restore globals after assertions.
-diff --git a/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md
++- `RandomSeed.next()` was not changed.
++- The hardcoded `RandomSeed(42)` sequence remains compatible with PR_052 behavior.
++- New procedural methods consume the same seeded stream through shared helpers.
++- `saveState()` and `restoreState(state)` are in-memory and serializable; no browser storage was added.
++- No UI, API, database, or existing game logic adoption files changed.
+diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md
 new file mode 100644
-index 000000000..3a4232a4b
+index 000000000..a65ee9a91
 --- /dev/null
-+++ b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_requirement-checklist.md
-@@ -0,0 +1,20 @@
-+# PR_26177_DELTA_054-random-utility Requirement Checklist
++++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_requirement-checklist.md
+@@ -0,0 +1,16 @@
++# PR_26177_DELTA_055-random-seed-enhancements Requirement Checklist
 +
 +| Requirement | Status | Notes |
 +|---|---:|---|
-+| Add `Random` utility | PASS | Added `src/shared/math/Random.js`. |
-+| Include `Random.next()` | PASS | Static method added. |
-+| Include `Random.nextInt(min, max)` | PASS | Static method added using shared helper. |
-+| Include `Random.nextFloat(min, max)` | PASS | Static method added using shared helper. |
-+| Include `Random.pick(array)` | PASS | Static method added using shared helper. |
-+| Include `Random.shuffle(array)` | PASS | Static method added using shared helper. |
-+| Include `Random.chance(percent)` | PASS | Static method added using shared helper. |
-+| Include `Random.weightedPick(weightedItems)` | PASS | Static method added using shared helper. |
-+| Include `Random.uuid()` | PASS | Static RFC 4122 v4 UUID method added. |
-+| Prefer `crypto.getRandomValues()` when available | PASS | `Random.next()` and `Random.uuid()` use crypto random values when present. |
-+| Use `Math.random()` only as compatibility fallback | PASS | Fallback path is used only when crypto random values are unavailable. |
-+| No deterministic seed support in `Random` | PASS | No `seed` method or seed state added. |
-+| No browser storage | PASS | No storage usage added. |
++| Update `RandomSeed` to use shared helper logic where appropriate | PASS | `nextInt`, `nextFloat`, `pick`, and new methods use `randomHelpers.js`. |
++| Add `shuffle(array)` | PASS | Added seeded shuffle method. |
++| Add `chance(percent)` | PASS | Added seeded chance method. |
++| Add `weightedPick(weightedItems)` | PASS | Added seeded weighted pick method. |
++| Add `saveState()` | PASS | Added serializable state capture. |
++| Add `restoreState(state)` | PASS | Added state restore with validation. |
++| Preserve existing `RandomSeed` sequence compatibility | PASS | Hardcoded `RandomSeed(42)` sequence check passes. |
++| Same seed still reproduces same sequence | PASS | Existing targeted test still passes. |
++| Reseeding still reproduces same sequence | PASS | Existing targeted test still passes. |
++| Add targeted unit tests for new methods | PASS | Extended `tests/shared/RandomSeed.test.mjs`. |
++| No adoption changes in existing game logic | PASS | No game logic call sites changed. |
 +| No UI changes | PASS | No UI files changed. |
-+| Add JSDoc | PASS | Added class and public method JSDoc. |
-+| Add targeted unit tests | PASS | Added `tests/shared/Random.test.mjs`. |
-diff --git a/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md
+diff --git a/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md
 new file mode 100644
-index 000000000..09eb20a34
+index 000000000..d2203f234
 --- /dev/null
-+++ b/docs_build/dev/reports/PR_26177_DELTA_054-random-utility_validation-lane.md
++++ b/docs_build/dev/reports/PR_26177_DELTA_055-random-seed-enhancements_validation-lane.md
 @@ -0,0 +1,24 @@
-+# PR_26177_DELTA_054-random-utility Validation Lane
++# PR_26177_DELTA_055-random-seed-enhancements Validation Lane
 +
 +Status: PASS
 +
 +## Commands
 +
 +```powershell
-+node ./scripts/run-node-test-files.mjs tests/shared/Random.test.mjs tests/shared/RandomHelpers.test.mjs
-+node --check src/shared/math/Random.js
-+node --check tests/shared/Random.test.mjs
++node ./scripts/run-node-test-files.mjs tests/shared/RandomSeed.test.mjs tests/shared/RandomHelpers.test.mjs
++node --check src/shared/math/RandomSeed.js
++node --check tests/shared/RandomSeed.test.mjs
 +git diff --check
 +```
 +
 +## Results
 +
-+- PASS: `tests/shared/Random.test.mjs`
++- PASS: `tests/shared/RandomSeed.test.mjs`
 +- PASS: `tests/shared/RandomHelpers.test.mjs`
-+- PASS: `src/shared/math/Random.js` syntax check
-+- PASS: `tests/shared/Random.test.mjs` syntax check
++- PASS: `src/shared/math/RandomSeed.js` syntax check
++- PASS: `tests/shared/RandomSeed.test.mjs` syntax check
 +- PASS: `git diff --check`
 +
 +## Playwright
 +
 +SKIP. Playwright was not run because this PR does not change UI or browser runtime flows.
-diff --git a/src/shared/math/Random.js b/src/shared/math/Random.js
-new file mode 100644
-index 000000000..84f38782a
---- /dev/null
-+++ b/src/shared/math/Random.js
-@@ -0,0 +1,151 @@
-+import {
-+  chance as randomChance,
-+  nextFloat as randomNextFloat,
-+  nextInt as randomNextInt,
-+  pick as randomPick,
-+  shuffle as randomShuffle,
-+  weightedPick as randomWeightedPick,
-+} from "./randomHelpers.js";
-+
-+const UINT32_RANGE = 0x100000000;
-+const UUID_BYTE_LENGTH = 16;
-+
-+function getCryptoSource() {
-+  const cryptoSource = globalThis.crypto;
-+  return cryptoSource && typeof cryptoSource.getRandomValues === "function" ? cryptoSource : null;
-+}
-+
-+function randomUint32() {
-+  const cryptoSource = getCryptoSource();
-+  if (cryptoSource) {
-+    const values = new Uint32Array(1);
-+    cryptoSource.getRandomValues(values);
-+    return values[0] >>> 0;
-+  }
-+
-+  return Math.floor(Math.random() * UINT32_RANGE) >>> 0;
-+}
-+
-+function fillRandomBytes(bytes) {
-+  const cryptoSource = getCryptoSource();
-+  if (cryptoSource) {
-+    cryptoSource.getRandomValues(bytes);
-+    return bytes;
-+  }
-+
-+  for (let index = 0; index < bytes.length; index += 1) {
-+    bytes[index] = Math.floor(Math.random() * 256);
-+  }
-+
-+  return bytes;
-+}
-+
-+function byteToHex(byte) {
-+  return byte.toString(16).padStart(2, "0");
-+}
-+
-+function formatUuid(bytes) {
-+  bytes[6] = (bytes[6] & 0x0f) | 0x40;
-+  bytes[8] = (bytes[8] & 0x3f) | 0x80;
-+
-+  const hex = Array.from(bytes, byteToHex);
-+  return [
-+    hex.slice(0, 4).join(""),
-+    hex.slice(4, 6).join(""),
-+    hex.slice(6, 8).join(""),
-+    hex.slice(8, 10).join(""),
-+    hex.slice(10, 16).join(""),
-+  ].join("-");
-+}
-+
-+/**
-+ * Nondeterministic random utility for convenience operations that do not need
-+ * seeded repeatability. `Random` prefers `crypto.getRandomValues()` and uses
-+ * `Math.random()` only as a compatibility fallback.
-+ */
-+export class Random {
-+  /**
-+   * Returns a nondeterministic number in the range [0, 1).
-+   *
-+   * @returns {number} Nondeterministic random number.
-+   */
-+  static next() {
-+    return randomUint32() / UINT32_RANGE;
-+  }
-+
-+  /**
-+   * Returns a nondeterministic integer between min and max, inclusive.
-+   *
-+   * @param {number} min Inclusive lower bound.
-+   * @param {number} max Inclusive upper bound.
-+   * @returns {number} Random integer in the requested range.
-+   */
-+  static nextInt(min, max) {
-+    return randomNextInt(() => Random.next(), min, max);
-+  }
-+
-+  /**
-+   * Returns a nondeterministic floating-point number in the range [min, max).
-+   *
-+   * @param {number} min Inclusive lower bound.
-+   * @param {number} max Exclusive upper bound.
-+   * @returns {number} Random float in the requested range.
-+   */
-+  static nextFloat(min, max) {
-+    return randomNextFloat(() => Random.next(), min, max);
-+  }
-+
-+  /**
-+   * Selects one nondeterministic item from a non-empty array.
-+   *
-+   * @template T
-+   * @param {T[]} array Source items.
-+   * @returns {T} Selected item.
-+   */
-+  static pick(array) {
-+    return randomPick(() => Random.next(), array);
-+  }
-+
-+  /**
-+   * Returns a nondeterministically shuffled copy of an array.
-+   *
-+   * @template T
-+   * @param {T[]} array Source items.
-+   * @returns {T[]} Shuffled copy.
-+   */
-+  static shuffle(array) {
-+    return randomShuffle(() => Random.next(), array);
-+  }
-+
-+  /**
-+   * Returns true when a nondeterministic roll falls within the percent chance.
-+   *
-+   * @param {number} percent Percent chance from 0 through 100.
-+   * @returns {boolean} Whether the chance roll succeeds.
-+   */
-+  static chance(percent) {
-+    return randomChance(() => Random.next(), percent);
-+  }
-+
-+  /**
-+   * Picks one nondeterministic weighted item.
-+   *
-+   * @template T
-+   * @param {{item?: T, value?: T, weight: number}[]} weightedItems Weighted item entries.
-+   * @returns {T} Selected item.
-+   */
-+  static weightedPick(weightedItems) {
-+    return randomWeightedPick(() => Random.next(), weightedItems);
-+  }
-+
-+  /**
-+   * Creates an RFC 4122 version 4 UUID using the same nondeterministic source.
-+   *
-+   * @returns {string} Random UUID string.
-+   */
-+  static uuid() {
-+    return formatUuid(fillRandomBytes(new Uint8Array(UUID_BYTE_LENGTH)));
-+  }
-+}
-+
-+export default Random;
-diff --git a/tests/shared/Random.test.mjs b/tests/shared/Random.test.mjs
-new file mode 100644
-index 000000000..1559aa1ca
---- /dev/null
-+++ b/tests/shared/Random.test.mjs
-@@ -0,0 +1,112 @@
-+/*
-+Toolbox Aid
-+David Quesenberry
-+06/26/2026
-+Random.test.mjs
-+*/
-+import assert from "node:assert/strict";
-+import { Random } from "../../src/shared/math/Random.js";
-+
-+const UUID_V4_PATTERN = /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/;
-+
-+function sequence(values) {
-+  let index = 0;
-+  return () => values[index++ % values.length];
-+}
-+
-+function setCrypto(value) {
-+  Object.defineProperty(globalThis, "crypto", {
-+    configurable: true,
-+    enumerable: true,
-+    value,
-+  });
-+}
-+
-+async function withRandomSources({ cryptoSource, mathValues }, callback) {
-+  const cryptoDescriptor = Object.getOwnPropertyDescriptor(globalThis, "crypto");
-+  const originalMathRandom = Math.random;
-+
-+  if (Object.hasOwn({ cryptoSource }, "cryptoSource")) {
-+    setCrypto(cryptoSource);
-+  }
-+
-+  if (mathValues) {
-+    Math.random = sequence(mathValues);
-+  }
-+
-+  try {
-+    await callback();
-+  } finally {
-+    if (cryptoDescriptor) {
-+      Object.defineProperty(globalThis, "crypto", cryptoDescriptor);
-+    } else {
-+      delete globalThis.crypto;
-+    }
-+    Math.random = originalMathRandom;
-+  }
-+}
-+
-+export async function run() {
-+  let cryptoCalls = 0;
-+  await withRandomSources(
-+    {
-+      cryptoSource: {
-+        getRandomValues(values) {
-+          cryptoCalls += 1;
-+          if (values instanceof Uint32Array) {
-+            values[0] = 0x80000000;
-+            return values;
-+          }
-+
-+          for (let index = 0; index < values.length; index += 1) {
-+            values[index] = index;
-+          }
-+          return values;
-+        },
-+      },
-+    },
-+    async () => {
-+      assert.equal(Random.next(), 0.5);
-+      assert.equal(Random.uuid(), "00010203-0405-4607-8809-0a0b0c0d0e0f");
-+      assert.equal(cryptoCalls >= 2, true);
-+    }
-+  );
-+
-+  await withRandomSources({ cryptoSource: undefined, mathValues: [0.25] }, async () => {
-+    assert.equal(Random.next(), 0.25);
-+  });
-+
-+  await withRandomSources(
-+    {
-+      cryptoSource: undefined,
-+      mathValues: [0.5, 0.25, 0.9, 0.1, 0.6, 0.2, 0.49, 0.5, 0.8],
-+    },
-+    async () => {
-+      assert.equal(Random.nextInt(0, 10), 5);
-+      assert.equal(Random.nextFloat(10, 20), 12.5);
-+      assert.equal(Random.pick(["a", "b", "c"]), "c");
-+      assert.deepEqual(Random.shuffle(["a", "b", "c", "d"]), ["c", "d", "b", "a"]);
-+      assert.equal(Random.chance(50), true);
-+      assert.equal(Random.chance(50), false);
-+      assert.equal(
-+        Random.weightedPick([
-+          { item: "common", weight: 7 },
-+          { item: "rare", weight: 3 },
-+        ]),
-+        "rare"
-+      );
-+    }
-+  );
-+
-+  await withRandomSources({ cryptoSource: undefined, mathValues: Array(16).fill(0.5) }, async () => {
-+    assert.match(Random.uuid(), UUID_V4_PATTERN);
-+  });
-+
-+  assert.equal(typeof Random.seed, "undefined");
-+  assert.throws(() => Random.pick([]), RangeError);
-+  assert.throws(() => Random.chance(-1), RangeError);
-+}
-+
-+if (import.meta.url === `file://${process.argv[1]}`) {
-+  await run();
-+}
diff --git a/src/shared/math/RandomSeed.js b/src/shared/math/RandomSeed.js
index 19d948644..606bc0738 100644
--- a/src/shared/math/RandomSeed.js
+++ b/src/shared/math/RandomSeed.js
@@ -1,3 +1,12 @@
+import {
+  chance as randomChance,
+  nextFloat as randomNextFloat,
+  nextInt as randomNextInt,
+  pick as randomPick,
+  shuffle as randomShuffle,
+  weightedPick as randomWeightedPick,
+} from "./randomHelpers.js";
+
 const UINT32_RANGE = 0x100000000;
 const FNV_OFFSET_BASIS = 0x811c9dc5;
 const FNV_PRIME = 0x01000193;
@@ -14,21 +23,6 @@ function normalizeSeedValue(value) {
   return hash >>> 0;
 }
 
-function assertFiniteNumber(value, name) {
-  if (!Number.isFinite(value)) {
-    throw new TypeError(`${name} must be a finite number.`);
-  }
-}
-
-function assertOrderedRange(min, max) {
-  assertFiniteNumber(min, "min");
-  assertFiniteNumber(max, "max");
-
-  if (max < min) {
-    throw new RangeError("max must be greater than or equal to min.");
-  }
-}
-
 /**
  * Deterministic seeded pseudo-random number generator for repeatable game and
  * tool workflows. `RandomSeed` is intentionally opt-in and does not replace
@@ -76,15 +70,7 @@ export class RandomSeed {
    * @returns {number} A deterministic integer inside the requested range.
    */
   nextInt(min, max) {
-    assertOrderedRange(min, max);
-    const lower = Math.ceil(min);
-    const upper = Math.floor(max);
-
-    if (upper < lower) {
-      throw new RangeError("integer range must include at least one integer.");
-    }
-
-    return Math.floor(this.next() * (upper - lower + 1)) + lower;
+    return randomNextInt(() => this.next(), min, max);
   }
 
   /**
@@ -95,8 +81,7 @@ export class RandomSeed {
    * @returns {number} A deterministic floating-point number inside the range.
    */
   nextFloat(min, max) {
-    assertOrderedRange(min, max);
-    return min + this.next() * (max - min);
+    return randomNextFloat(() => this.next(), min, max);
   }
 
   /**
@@ -107,15 +92,65 @@ export class RandomSeed {
    * @returns {T} The selected array item.
    */
   pick(array) {
-    if (!Array.isArray(array)) {
-      throw new TypeError("array must be an array.");
-    }
+    return randomPick(() => this.next(), array);
+  }
+
+  /**
+   * Returns a deterministically shuffled copy of an array.
+   *
+   * @template T
+   * @param {T[]} array Source array to shuffle.
+   * @returns {T[]} Shuffled copy.
+   */
+  shuffle(array) {
+    return randomShuffle(() => this.next(), array);
+  }
 
-    if (array.length === 0) {
-      throw new RangeError("array must contain at least one item.");
+  /**
+   * Returns true when the deterministic roll falls within the percent chance.
+   *
+   * @param {number} percent Percent chance from 0 through 100.
+   * @returns {boolean} Whether the chance roll succeeds.
+   */
+  chance(percent) {
+    return randomChance(() => this.next(), percent);
+  }
+
+  /**
+   * Selects one deterministic weighted item.
+   *
+   * @template T
+   * @param {{item?: T, value?: T, weight: number}[]} weightedItems Weighted item entries.
+   * @returns {T} Selected item.
+   */
+  weightedPick(weightedItems) {
+    return randomWeightedPick(() => this.next(), weightedItems);
+  }
+
+  /**
+   * Captures the current generator state for later restoration.
+   *
+   * @returns {{state: number}} Serializable generator state.
+   */
+  saveState() {
+    return { state: this._state >>> 0 };
+  }
+
+  /**
+   * Restores a generator state previously returned by `saveState()`.
+   *
+   * @param {{state: number}} state Saved generator state.
+   * @returns {RandomSeed} This generator instance for chaining.
+   */
+  restoreState(state) {
+    const stateValue = Number(state?.state);
+
+    if (!Number.isInteger(stateValue) || stateValue < 0 || stateValue > 0xffffffff) {
+      throw new RangeError("state.state must be an unsigned 32-bit integer.");
     }
 
-    return array[this.nextInt(0, array.length - 1)];
+    this._state = stateValue >>> 0;
+    return this;
   }
 }
 
diff --git a/tests/shared/RandomSeed.test.mjs b/tests/shared/RandomSeed.test.mjs
index b61a44157..23b5f6459 100644
--- a/tests/shared/RandomSeed.test.mjs
+++ b/tests/shared/RandomSeed.test.mjs
@@ -16,6 +16,15 @@ export function run() {
   const second = new RandomSeed("level-1");
   assert.deepEqual(takeSequence(first, 5), takeSequence(second, 5));
 
+  assert.deepEqual(takeSequence(new RandomSeed(42), 6), [
+    0.3077305785845965,
+    0.3676118436269462,
+    0.23133554426021874,
+    0.01758907549083233,
+    0.009130497695878148,
+    0.2082449474837631,
+  ]);
+
   first.seed("level-1");
   second.seed("different-level");
   assert.notDeepEqual(takeSequence(first, 5), takeSequence(second, 5));
@@ -46,10 +55,44 @@ export function run() {
     Array.from({ length: 8 }, () => pickerB.pick(pickSource))
   );
 
+  const shuffleSource = ["a", "b", "c", "d"];
+  const shuffleA = new RandomSeed("shuffle-seed");
+  const shuffleB = new RandomSeed("shuffle-seed");
+  assert.deepEqual(shuffleA.shuffle(shuffleSource), shuffleB.shuffle(shuffleSource));
+  assert.deepEqual(shuffleSource, ["a", "b", "c", "d"]);
+
+  const chanceA = new RandomSeed("chance-seed");
+  const chanceB = new RandomSeed("chance-seed");
+  assert.deepEqual(
+    Array.from({ length: 8 }, () => chanceA.chance(35)),
+    Array.from({ length: 8 }, () => chanceB.chance(35))
+  );
+
+  const weightedItems = [
+    { item: "common", weight: 7 },
+    { item: "rare", weight: 3 },
+  ];
+  const weightedA = new RandomSeed("weighted-seed");
+  const weightedB = new RandomSeed("weighted-seed");
+  assert.deepEqual(
+    Array.from({ length: 8 }, () => weightedA.weightedPick(weightedItems)),
+    Array.from({ length: 8 }, () => weightedB.weightedPick(weightedItems))
+  );
+
+  const stateSeed = new RandomSeed("state-seed");
+  stateSeed.next();
+  const savedState = stateSeed.saveState();
+  const expectedAfterState = takeSequence(stateSeed, 4);
+  assert.equal(stateSeed.restoreState(savedState), stateSeed);
+  assert.deepEqual(takeSequence(stateSeed, 4), expectedAfterState);
+
   assert.throws(() => new RandomSeed("empty").pick([]), RangeError);
   assert.throws(() => new RandomSeed("bad-array").pick("not-array"), TypeError);
   assert.throws(() => new RandomSeed("bad-int").nextInt(5, 2), RangeError);
   assert.throws(() => new RandomSeed("bad-float").nextFloat(0, Number.POSITIVE_INFINITY), TypeError);
+  assert.throws(() => new RandomSeed("bad-chance").chance(101), RangeError);
+  assert.throws(() => new RandomSeed("bad-weight").weightedPick([{ item: "none", weight: 0 }]), RangeError);
+  assert.throws(() => new RandomSeed("bad-state").restoreState({ state: -1 }), RangeError);
 }
 
 if (import.meta.url === `file://${process.argv[1]}`) {