diff --git a/.claude/skills/nabledge-1.2/SKILL.md b/.claude/skills/nabledge-1.2/SKILL.md
new file mode 100644
index 00000000..cdd55d67
--- /dev/null
+++ b/.claude/skills/nabledge-1.2/SKILL.md
@@ -0,0 +1,74 @@
+---
+name: nabledge-1.2
+description: Provides Nablarch 1.2 framework knowledge and code analysis capabilities. Use when developing Nablarch applications, implementing features, reviewing code, or answering questions about Nablarch 1.2.
+user-invocable: false
+disable-model-invocation: true
+---
+
+# Nabledge-1.2: Nablarch 1.2 Knowledge Base
+
+Knowledge base and code analysis tool for Nablarch 1.2 framework.
+
+## Usage
+
+**Interactive mode**:
+```
+nabledge-1.2
+```
+
+**Direct knowledge search**:
+```
+nabledge-1.2 "<question>"
+```
+
+**Direct code analysis**:
+```
+nabledge-1.2 code-analysis
+```
+
+## Execution Instructions
+
+### Step 0: Determine Workflow
+
+**No arguments** (`nabledge-1.2`):
+- Show greeting
+- Ask user to choose: Knowledge Search or Code Analysis
+
+**Text argument** (`nabledge-1.2 "<question>"`):
+- Execute `workflows/qa.md` to answer question
+- This workflow orchestrates _knowledge-search pipeline
+
+**"code-analysis" argument** (`nabledge-1.2 code-analysis`):
+- Execute `workflows/code-analysis.md` to analyze user's code
+
+## Critical Constraints
+
+**Knowledge files only**: Answer using ONLY information in `knowledge/*.json`. DO NOT use external knowledge or LLM training data.
+
+**When knowledge is missing**:
+- Output: "この情報は知識ファイルに含まれていません"
+- List related available knowledge from `knowledge/index.toon`
+- DO NOT answer from external knowledge
+
+## Error Handling
+
+**Knowledge not found** (Knowledge Search):
+- Message: "この情報は知識ファイルに含まれていません"
+- List related entries from index.toon
+
+**Target code not found** (Code Analysis):
+- Message: "指定されたコードが見つかりませんでした"
+- Show search patterns used
+- Ask for clarification
+
+**Workflow execution failure**:
+- Inform which step failed
+- Show error details
+- Suggest retry or alternative
+
+## Knowledge Structure
+
+**Files**: `knowledge/features/`, `knowledge/checks/`, `knowledge/releases/`
+**Index**: `knowledge/index.toon` (all entries with search hints)
+**Schemas**: `schemas/*.json` (JSON validation schemas)
+**Scripts**: `scripts/*.sh` (pre-built processing scripts)
diff --git a/.claude/skills/nabledge-1.2/plugin/CHANGELOG.md b/.claude/skills/nabledge-1.2/plugin/CHANGELOG.md
new file mode 100644
index 00000000..489a9594
--- /dev/null
+++ b/.claude/skills/nabledge-1.2/plugin/CHANGELOG.md
@@ -0,0 +1,7 @@
+# 変更履歴
+
+nabledge-1.2プラグインの主な変更内容を記録しています。
+
+フォーマットは [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) に基づいています。
+
+## [Unreleased]
diff --git a/.claude/skills/nabledge-1.2/plugin/plugin.json b/.claude/skills/nabledge-1.2/plugin/plugin.json
new file mode 100644
index 00000000..7d67a07e
--- /dev/null
+++ b/.claude/skills/nabledge-1.2/plugin/plugin.json
@@ -0,0 +1,13 @@
+{
+  "name": "nabledge-1.2",
+  "version": "0.1",
+  "description": "Nablarch 1.2 skill for AI-assisted development",
+  "author": {
+    "name": "Nablarch"
+  },
+  "license": "Apache-2.0",
+  "repository": "https://github.com/nablarch/nabledge",
+  "keywords": [
+    "nablarch"
+  ]
+}
diff --git a/.claude/skills/nabledge-1.3/SKILL.md b/.claude/skills/nabledge-1.3/SKILL.md
new file mode 100644
index 00000000..b69572e5
--- /dev/null
+++ b/.claude/skills/nabledge-1.3/SKILL.md
@@ -0,0 +1,74 @@
+---
+name: nabledge-1.3
+description: Provides Nablarch 1.3 framework knowledge and code analysis capabilities. Use when developing Nablarch applications, implementing features, reviewing code, or answering questions about Nablarch 1.3.
+user-invocable: false
+disable-model-invocation: true
+---
+
+# Nabledge-1.3: Nablarch 1.3 Knowledge Base
+
+Knowledge base and code analysis tool for Nablarch 1.3 framework.
+
+## Usage
+
+**Interactive mode**:
+```
+nabledge-1.3
+```
+
+**Direct knowledge search**:
+```
+nabledge-1.3 "<question>"
+```
+
+**Direct code analysis**:
+```
+nabledge-1.3 code-analysis
+```
+
+## Execution Instructions
+
+### Step 0: Determine Workflow
+
+**No arguments** (`nabledge-1.3`):
+- Show greeting
+- Ask user to choose: Knowledge Search or Code Analysis
+
+**Text argument** (`nabledge-1.3 "<question>"`):
+- Execute `workflows/qa.md` to answer question
+- This workflow orchestrates _knowledge-search pipeline
+
+**"code-analysis" argument** (`nabledge-1.3 code-analysis`):
+- Execute `workflows/code-analysis.md` to analyze user's code
+
+## Critical Constraints
+
+**Knowledge files only**: Answer using ONLY information in `knowledge/*.json`. DO NOT use external knowledge or LLM training data.
+
+**When knowledge is missing**:
+- Output: "この情報は知識ファイルに含まれていません"
+- List related available knowledge from `knowledge/index.toon`
+- DO NOT answer from external knowledge
+
+## Error Handling
+
+**Knowledge not found** (Knowledge Search):
+- Message: "この情報は知識ファイルに含まれていません"
+- List related entries from index.toon
+
+**Target code not found** (Code Analysis):
+- Message: "指定されたコードが見つかりませんでした"
+- Show search patterns used
+- Ask for clarification
+
+**Workflow execution failure**:
+- Inform which step failed
+- Show error details
+- Suggest retry or alternative
+
+## Knowledge Structure
+
+**Files**: `knowledge/features/`, `knowledge/checks/`, `knowledge/releases/`
+**Index**: `knowledge/index.toon` (all entries with search hints)
+**Schemas**: `schemas/*.json` (JSON validation schemas)
+**Scripts**: `scripts/*.sh` (pre-built processing scripts)
diff --git a/.claude/skills/nabledge-1.3/plugin/CHANGELOG.md b/.claude/skills/nabledge-1.3/plugin/CHANGELOG.md
new file mode 100644
index 00000000..950f45f8
--- /dev/null
+++ b/.claude/skills/nabledge-1.3/plugin/CHANGELOG.md
@@ -0,0 +1,7 @@
+# 変更履歴
+
+nabledge-1.3プラグインの主な変更内容を記録しています。
+
+フォーマットは [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) に基づいています。
+
+## [Unreleased]
diff --git a/.claude/skills/nabledge-1.3/plugin/plugin.json b/.claude/skills/nabledge-1.3/plugin/plugin.json
new file mode 100644
index 00000000..c9c65208
--- /dev/null
+++ b/.claude/skills/nabledge-1.3/plugin/plugin.json
@@ -0,0 +1,13 @@
+{
+  "name": "nabledge-1.3",
+  "version": "0.1",
+  "description": "Nablarch 1.3 skill for AI-assisted development",
+  "author": {
+    "name": "Nablarch"
+  },
+  "license": "Apache-2.0",
+  "repository": "https://github.com/nablarch/nabledge",
+  "keywords": [
+    "nablarch"
+  ]
+}
diff --git a/.claude/skills/nabledge-1.4/SKILL.md b/.claude/skills/nabledge-1.4/SKILL.md
new file mode 100644
index 00000000..84709348
--- /dev/null
+++ b/.claude/skills/nabledge-1.4/SKILL.md
@@ -0,0 +1,74 @@
+---
+name: nabledge-1.4
+description: Provides Nablarch 1.4 framework knowledge and code analysis capabilities. Use when developing Nablarch applications, implementing features, reviewing code, or answering questions about Nablarch 1.4.
+user-invocable: false
+disable-model-invocation: true
+---
+
+# Nabledge-1.4: Nablarch 1.4 Knowledge Base
+
+Knowledge base and code analysis tool for Nablarch 1.4 framework.
+
+## Usage
+
+**Interactive mode**:
+```
+nabledge-1.4
+```
+
+**Direct knowledge search**:
+```
+nabledge-1.4 "<question>"
+```
+
+**Direct code analysis**:
+```
+nabledge-1.4 code-analysis
+```
+
+## Execution Instructions
+
+### Step 0: Determine Workflow
+
+**No arguments** (`nabledge-1.4`):
+- Show greeting
+- Ask user to choose: Knowledge Search or Code Analysis
+
+**Text argument** (`nabledge-1.4 "<question>"`):
+- Execute `workflows/qa.md` to answer question
+- This workflow orchestrates _knowledge-search pipeline
+
+**"code-analysis" argument** (`nabledge-1.4 code-analysis`):
+- Execute `workflows/code-analysis.md` to analyze user's code
+
+## Critical Constraints
+
+**Knowledge files only**: Answer using ONLY information in `knowledge/*.json`. DO NOT use external knowledge or LLM training data.
+
+**When knowledge is missing**:
+- Output: "この情報は知識ファイルに含まれていません"
+- List related available knowledge from `knowledge/index.toon`
+- DO NOT answer from external knowledge
+
+## Error Handling
+
+**Knowledge not found** (Knowledge Search):
+- Message: "この情報は知識ファイルに含まれていません"
+- List related entries from index.toon
+
+**Target code not found** (Code Analysis):
+- Message: "指定されたコードが見つかりませんでした"
+- Show search patterns used
+- Ask for clarification
+
+**Workflow execution failure**:
+- Inform which step failed
+- Show error details
+- Suggest retry or alternative
+
+## Knowledge Structure
+
+**Files**: `knowledge/features/`, `knowledge/checks/`, `knowledge/releases/`
+**Index**: `knowledge/index.toon` (all entries with search hints)
+**Schemas**: `schemas/*.json` (JSON validation schemas)
+**Scripts**: `scripts/*.sh` (pre-built processing scripts)
diff --git a/.claude/skills/nabledge-1.4/docs/README.md b/.claude/skills/nabledge-1.4/docs/README.md
new file mode 100644
index 00000000..d41e20ad
--- /dev/null
+++ b/.claude/skills/nabledge-1.4/docs/README.md
@@ -0,0 +1,3 @@
+# Nablarch 6 ドキュメント
+
+0 ページ
diff --git a/.claude/skills/nabledge-1.4/knowledge/index.toon b/.claude/skills/nabledge-1.4/knowledge/index.toon
new file mode 100644
index 00000000..979304c0
--- /dev/null
+++ b/.claude/skills/nabledge-1.4/knowledge/index.toon
@@ -0,0 +1,3 @@
+# Nabledge-1.4 Knowledge Index
+
+files[0,]{title,type,category,processing_patterns,path}:
diff --git a/.claude/skills/nabledge-1.4/plugin/CHANGELOG.md b/.claude/skills/nabledge-1.4/plugin/CHANGELOG.md
new file mode 100644
index 00000000..e9c561bd
--- /dev/null
+++ b/.claude/skills/nabledge-1.4/plugin/CHANGELOG.md
@@ -0,0 +1,7 @@
+# 変更履歴
+
+nabledge-1.4プラグインの主な変更内容を記録しています。
+
+フォーマットは [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) に基づいています。
+
+## [Unreleased]
diff --git a/.claude/skills/nabledge-1.4/plugin/plugin.json b/.claude/skills/nabledge-1.4/plugin/plugin.json
new file mode 100644
index 00000000..6d5999e2
--- /dev/null
+++ b/.claude/skills/nabledge-1.4/plugin/plugin.json
@@ -0,0 +1,13 @@
+{
+  "name": "nabledge-1.4",
+  "version": "0.1",
+  "description": "Nablarch 1.4 skill for AI-assisted development",
+  "author": {
+    "name": "Nablarch"
+  },
+  "license": "Apache-2.0",
+  "repository": "https://github.com/nablarch/nabledge",
+  "keywords": [
+    "nablarch"
+  ]
+}
diff --git a/.pr/00189/review-by-qa-engineer.md b/.pr/00189/review-by-qa-engineer.md
new file mode 100644
index 00000000..1ed3ef2d
--- /dev/null
+++ b/.pr/00189/review-by-qa-engineer.md
@@ -0,0 +1,56 @@
+# Expert Review: QA Engineer
+
+**Date**: 2026-03-13
+**Reviewer**: AI Agent as QA Engineer
+**Files Reviewed**: 1 file
+
+## Overall Assessment
+
+**Rating**: 4/5
+**Summary**: `TestV1xVersions` is well-structured and consistent with existing test patterns. Tests are clear, focused, and exercise correct routing logic for all three v1.x versions.
+
+## Key Issues
+
+### Medium Priority
+
+1. **Missing `--resume` coverage for v1.x gen**
+   - Description: `TestGenCommand` has `test_gen_resume_skips_clean` for v6 but no equivalent for v1.x.
+   - Suggestion: Add parametrized `test_gen_v1x_resume_skips_clean` asserting 1 command with `scripts/run.py`.
+   - Decision: **Implement Now** — added `test_gen_v1x_resume_skips_clean` test.
+   - Reasoning: Closes a real behavioral gap with minimal effort.
+
+2. **regen/fix tests don't assert `scripts/run.py`**
+   - Description: Assertions check flags but not which script is called, unlike gen test.
+   - Suggestion: Add `assert "scripts/run.py" in lines[0]` to regen and fix tests.
+   - Decision: **Implement Now** — added to both tests.
+   - Reasoning: Tightens routing verification consistently with gen test.
+
+### Low Priority
+
+3. **Split dual assertion in test_gen_v1x_calls_clean_then_run**
+   - Description: Single `and`-joined assertion makes failure messages less specific.
+   - Suggestion: Split into two separate assertions.
+   - Decision: **Defer** — correct behavior, style preference only.
+   - Reasoning: Low value change; existing test pattern uses same style.
+
+4. **No `returncode` assertion in success cases**
+   - Description: Tests pass even if kc.sh exits with error after printing CMD lines.
+   - Suggestion: Add `assert result.returncode == 0` — ideally backported to whole file.
+   - Decision: **Defer** — whole-file refactor; follow-up.
+   - Reasoning: Existing tests have same gap; out of scope for this PR.
+
+## Positive Aspects
+
+- Parametrize approach efficiently covers all three versions without duplication.
+- Version argument assertion in regen/fix is an improvement over existing v6 tests.
+- New class is self-contained and doesn't interfere with existing classes.
+- Test naming follows established `test_{command}_{context}_{behavior}` convention.
+- Failure message in gen test includes version for clear parametrized failure diagnosis.
+
+## Recommendations
+
+- Add `returncode` assertions as a follow-up for the whole file.
+
+## Files Reviewed
+
+- `tools/knowledge-creator/tests/ut/test_kc_sh.py` (tests)
diff --git a/.pr/00189/review-by-software-engineer.md b/.pr/00189/review-by-software-engineer.md
new file mode 100644
index 00000000..52c22afb
--- /dev/null
+++ b/.pr/00189/review-by-software-engineer.md
@@ -0,0 +1,61 @@
+# Expert Review: Software Engineer
+
+**Date**: 2026-03-13
+**Reviewer**: AI Agent as Software Engineer
+**Files Reviewed**: 5 files
+
+## Overall Assessment
+
+**Rating**: 4/5
+**Summary**: Changes correctly add infrastructure for Nablarch v1.x with a well-designed fallback path strategy. Core logic is sound, backward-compatible, and avoids invasive refactoring.
+
+## Key Issues
+
+### Medium Priority
+
+1. **`--version all` silently excludes v1.x**
+   - Description: `run.py` and `clean.py` expand `all` to only `["6", "5"]`. Help text now lists 1.4/1.3/1.2 as valid choices alongside `all`, which could mislead users into thinking `all` processes everything.
+   - Suggestion: Add documentation to help text clarifying `all` covers v5 and v6 only.
+   - Decision: **Implement Now** — updated help text in both `run.py` and `clean.py`.
+   - Reasoning: Prevents user confusion at no implementation cost.
+
+2. **Path style inconsistency between step1 and generate_expected**
+   - Description: `step1_list_sources.py` uses f-strings while `generate_expected.py` uses `os.path.join` for equivalent logic.
+   - Suggestion: Align styles across both files.
+   - Decision: **Defer** — cosmetic, no bug risk on Linux; these files have always had divergent styles.
+   - Reasoning: Low risk, not worth churn in this PR.
+
+### Low Priority
+
+3. **No warning when neither RST path exists**
+   - Description: When docs aren't cloned, both paths fail silently with 0 sources and no user feedback.
+   - Suggestion: Add `logger.warning` when neither path resolves.
+   - Decision: **Implement Now** — added `else` branch with descriptive warning.
+   - Reasoning: Surfaces setup errors early for v1.x users.
+
+4. **No unit test for fallback path logic**
+   - Description: The `{version}_maintain` fallback in `step1_list_sources.py` isn't directly tested.
+   - Suggestion: Add a focused unit test using a temporary directory.
+   - Decision: **Defer to Future** — requires temp directory scaffolding; follow-up issue.
+   - Reasoning: Covered indirectly by E2E when docs are present; adequate for this PR.
+
+## Positive Aspects
+
+- The two-step fallback design preserves full backward compatibility for v5/v6.
+- `releases_dir` derived from `rst_base` is the correct fix — old code would silently mismatch.
+- Regex in `generate_expected.py` generalizes to any `*_maintain` directory pattern.
+- `generate_expected.py` and `step1_list_sources.py` implement identical fallback logic.
+- Symlink creation in `setup.sh` is idempotent and uses relative symlink target.
+- Mapping files are in place, completing a coherent feature.
+
+## Recommendations
+
+- Add unit test for fallback path logic in a follow-up issue.
+
+## Files Reviewed
+
+- `tools/knowledge-creator/scripts/run.py` (source code)
+- `tools/knowledge-creator/scripts/clean.py` (source code)
+- `tools/knowledge-creator/scripts/step1_list_sources.py` (source code)
+- `tools/knowledge-creator/tests/e2e/generate_expected.py` (source code)
+- `setup.sh` (configuration/script)
diff --git a/README.md b/README.md
index 972952ec..9ae1204a 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,24 @@ cp .env.example .env
 # .env を編集して認証情報を設定する
 ```
 
+### Nablarch 1.x ドキュメントのセットアップ
+
+`setup.sh` は Nablarch 1.4、1.3、1.2 用のドキュメントを自動クローンします。クローン後、各バージョンのディレクトリに `{version}_maintain` シンボリックリンクが作成されます：
+
+```
+.lw/nab-official/v1.4/
+  nablarch-document/   # クローンされたドキュメント
+  1.4_maintain -> nablarch-document   # シンボリックリンク（自動作成）
+```
+
+手動でシンボリックリンクを作成する場合：
+
+```bash
+ln -sf nablarch-document .lw/nab-official/v1.4/1.4_maintain
+ln -sf nablarch-document .lw/nab-official/v1.3/1.3_maintain
+ln -sf nablarch-document .lw/nab-official/v1.2/1.2_maintain
+```
+
 ## 使い方
 
 ```bash
diff --git a/setup.sh b/setup.sh
index 4f87109f..7ff8c06c 100755
--- a/setup.sh
+++ b/setup.sh
@@ -295,9 +295,12 @@ print_header "9. Cloning Nablarch Official Repositories"
 
 NAB_OFFICIAL_V6_DIR=".lw/nab-official/v6"
 NAB_OFFICIAL_V5_DIR=".lw/nab-official/v5"
+NAB_OFFICIAL_V14_DIR=".lw/nab-official/v1.4"
+NAB_OFFICIAL_V13_DIR=".lw/nab-official/v1.3"
+NAB_OFFICIAL_V12_DIR=".lw/nab-official/v1.2"
 
 # Create directories
-for dir in "$NAB_OFFICIAL_V6_DIR" "$NAB_OFFICIAL_V5_DIR" ".lw/research"; do
+for dir in "$NAB_OFFICIAL_V6_DIR" "$NAB_OFFICIAL_V5_DIR" "$NAB_OFFICIAL_V14_DIR" "$NAB_OFFICIAL_V13_DIR" "$NAB_OFFICIAL_V12_DIR" ".lw/research"; do
     if [ ! -d "$dir" ]; then
         print_status info "Creating $dir directory..."
         mkdir -p "$dir"
@@ -362,6 +365,21 @@ clone_repos_from_meta() {
 
 clone_repos_from_meta "6" "$NAB_OFFICIAL_V6_DIR"
 clone_repos_from_meta "5" "$NAB_OFFICIAL_V5_DIR"
+clone_repos_from_meta "1.4" "$NAB_OFFICIAL_V14_DIR"
+clone_repos_from_meta "1.3" "$NAB_OFFICIAL_V13_DIR"
+clone_repos_from_meta "1.2" "$NAB_OFFICIAL_V12_DIR"
+
+# Create version-named symlinks for v1.x (e.g. 1.4_maintain -> nablarch-document)
+# This allows both nablarch-document/ and 1.4_maintain/ path conventions to work.
+for ver in "1.4" "1.3" "1.2"; do
+    ver_dir=".lw/nab-official/v${ver}"
+    symlink_name="${ver}_maintain"
+    if [ -d "${ver_dir}/nablarch-document" ] && [ ! -e "${ver_dir}/${symlink_name}" ]; then
+        print_status info "Creating symlink ${ver_dir}/${symlink_name} -> nablarch-document"
+        ln -sf nablarch-document "${ver_dir}/${symlink_name}"
+        print_status ok "Symlink created"
+    fi
+done
 
 # Final summary
 print_header "Setup Completed Successfully!"
diff --git a/tools/knowledge-creator/.cache/v1.2/catalog.json b/tools/knowledge-creator/.cache/v1.2/catalog.json
new file mode 100644
index 00000000..c4b8a512
--- /dev/null
+++ b/tools/knowledge-creator/.cache/v1.2/catalog.json
@@ -0,0 +1,11 @@
+{
+  "version": "1.2",
+  "sources": [
+    {
+      "repo": "https://github.com/nablarch/nablarch-document",
+      "branch": "1.2_maintain",
+      "commit": ""
+    }
+  ],
+  "files": []
+}
diff --git a/tools/knowledge-creator/.cache/v1.3/catalog.json b/tools/knowledge-creator/.cache/v1.3/catalog.json
new file mode 100644
index 00000000..07655e84
--- /dev/null
+++ b/tools/knowledge-creator/.cache/v1.3/catalog.json
@@ -0,0 +1,11 @@
+{
+  "version": "1.3",
+  "sources": [
+    {
+      "repo": "https://github.com/nablarch/nablarch-document",
+      "branch": "1.3_maintain",
+      "commit": ""
+    }
+  ],
+  "files": []
+}
diff --git a/tools/knowledge-creator/.cache/v1.4/catalog.json b/tools/knowledge-creator/.cache/v1.4/catalog.json
new file mode 100644
index 00000000..e6cd0838
--- /dev/null
+++ b/tools/knowledge-creator/.cache/v1.4/catalog.json
@@ -0,0 +1,12 @@
+{
+  "version": "1.4",
+  "sources": [
+    {
+      "repo": "https://github.com/nablarch/nablarch-document",
+      "branch": "1.4_maintain",
+      "commit": ""
+    }
+  ],
+  "files": [],
+  "generated_at": "2026-03-13T15:39:45+09:00"
+}
\ No newline at end of file
diff --git a/tools/knowledge-creator/mappings/v1.2.json b/tools/knowledge-creator/mappings/v1.2.json
new file mode 100644
index 00000000..9dc60844
--- /dev/null
+++ b/tools/knowledge-creator/mappings/v1.2.json
@@ -0,0 +1,48 @@
+{
+  "rst": [
+    {"pattern": "extension_components/etl/", "type": "extension", "category": "etl"},
+    {"pattern": "extension_components/report/", "type": "extension", "category": "report"},
+    {"pattern": "extension_components/workflow/", "type": "extension", "category": "workflow"},
+    {"pattern": "extension_components/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/batch/nablarch_batch", "type": "processing-pattern", "category": "nablarch-batch"},
+    {"pattern": "application_framework/application_framework/batch/jsr352", "type": "processing-pattern", "category": "jakarta-batch"},
+    {"pattern": "application_framework/application_framework/batch/", "type": "processing-pattern", "category": "nablarch-batch"},
+    {"pattern": "application_framework/application_framework/web_service/rest", "type": "processing-pattern", "category": "restful-web-service"},
+    {"pattern": "application_framework/application_framework/web_service/http_messaging", "type": "processing-pattern", "category": "http-messaging"},
+    {"pattern": "application_framework/application_framework/web_service/", "type": "processing-pattern", "category": "restful-web-service"},
+    {"pattern": "application_framework/application_framework/web/", "type": "processing-pattern", "category": "web-application"},
+    {"pattern": "application_framework/application_framework/messaging/mom", "type": "processing-pattern", "category": "mom-messaging"},
+    {"pattern": "application_framework/application_framework/messaging/db", "type": "processing-pattern", "category": "db-messaging"},
+    {"pattern": "application_framework/application_framework/handlers/", "type": "component", "category": "handlers"},
+    {"pattern": "application_framework/application_framework/batch/jBatchHandler", "type": "component", "category": "handlers"},
+    {"pattern": "application_framework/application_framework/libraries/", "type": "component", "category": "libraries"},
+    {"pattern": "application_framework/adaptors/", "type": "component", "category": "adapters"},
+    {"pattern": "development_tools/testing_framework/", "type": "development-tools", "category": "testing-framework"},
+    {"pattern": "development_tools/toolbox/", "type": "development-tools", "category": "toolbox"},
+    {"pattern": "development_tools/java_static_analysis/", "type": "development-tools", "category": "java-static-analysis"},
+    {"pattern": "application_framework/application_framework/blank_project/", "type": "setup", "category": "blank-project"},
+    {"pattern": "application_framework/application_framework/configuration/", "type": "setup", "category": "configuration"},
+    {"pattern": "application_framework/setting_guide/", "type": "setup", "category": "setting-guide"},
+    {"pattern": "application_framework/application_framework/cloud_native/", "type": "setup", "category": "cloud-native"},
+    {"pattern": "about_nablarch/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/nablarch_architecture/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/nablarch/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "migration/", "type": "about", "category": "migration"},
+    {"pattern": "release_notes/", "type": "about", "category": "release-notes"},
+    {"pattern": "biz_samples/", "type": "guide", "category": "biz-samples"},
+    {"pattern": "application_framework/application_framework/messaging/", "type": "processing-pattern", "category": "db-messaging"},
+    {"pattern": "examples/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "external_contents/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "inquiry/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "jakarta_ee/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "nablarch_api/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "releases/", "type": "about", "category": "release-notes"},
+    {"pattern": "terms_of_use/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "development_tools/", "type": "development-tools", "category": "testing-framework"}
+  ],
+  "md": {},
+  "xlsx": {},
+  "xlsx_patterns": []
+}
diff --git a/tools/knowledge-creator/mappings/v1.3.json b/tools/knowledge-creator/mappings/v1.3.json
new file mode 100644
index 00000000..9dc60844
--- /dev/null
+++ b/tools/knowledge-creator/mappings/v1.3.json
@@ -0,0 +1,48 @@
+{
+  "rst": [
+    {"pattern": "extension_components/etl/", "type": "extension", "category": "etl"},
+    {"pattern": "extension_components/report/", "type": "extension", "category": "report"},
+    {"pattern": "extension_components/workflow/", "type": "extension", "category": "workflow"},
+    {"pattern": "extension_components/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/batch/nablarch_batch", "type": "processing-pattern", "category": "nablarch-batch"},
+    {"pattern": "application_framework/application_framework/batch/jsr352", "type": "processing-pattern", "category": "jakarta-batch"},
+    {"pattern": "application_framework/application_framework/batch/", "type": "processing-pattern", "category": "nablarch-batch"},
+    {"pattern": "application_framework/application_framework/web_service/rest", "type": "processing-pattern", "category": "restful-web-service"},
+    {"pattern": "application_framework/application_framework/web_service/http_messaging", "type": "processing-pattern", "category": "http-messaging"},
+    {"pattern": "application_framework/application_framework/web_service/", "type": "processing-pattern", "category": "restful-web-service"},
+    {"pattern": "application_framework/application_framework/web/", "type": "processing-pattern", "category": "web-application"},
+    {"pattern": "application_framework/application_framework/messaging/mom", "type": "processing-pattern", "category": "mom-messaging"},
+    {"pattern": "application_framework/application_framework/messaging/db", "type": "processing-pattern", "category": "db-messaging"},
+    {"pattern": "application_framework/application_framework/handlers/", "type": "component", "category": "handlers"},
+    {"pattern": "application_framework/application_framework/batch/jBatchHandler", "type": "component", "category": "handlers"},
+    {"pattern": "application_framework/application_framework/libraries/", "type": "component", "category": "libraries"},
+    {"pattern": "application_framework/adaptors/", "type": "component", "category": "adapters"},
+    {"pattern": "development_tools/testing_framework/", "type": "development-tools", "category": "testing-framework"},
+    {"pattern": "development_tools/toolbox/", "type": "development-tools", "category": "toolbox"},
+    {"pattern": "development_tools/java_static_analysis/", "type": "development-tools", "category": "java-static-analysis"},
+    {"pattern": "application_framework/application_framework/blank_project/", "type": "setup", "category": "blank-project"},
+    {"pattern": "application_framework/application_framework/configuration/", "type": "setup", "category": "configuration"},
+    {"pattern": "application_framework/setting_guide/", "type": "setup", "category": "setting-guide"},
+    {"pattern": "application_framework/application_framework/cloud_native/", "type": "setup", "category": "cloud-native"},
+    {"pattern": "about_nablarch/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/nablarch_architecture/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/nablarch/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "migration/", "type": "about", "category": "migration"},
+    {"pattern": "release_notes/", "type": "about", "category": "release-notes"},
+    {"pattern": "biz_samples/", "type": "guide", "category": "biz-samples"},
+    {"pattern": "application_framework/application_framework/messaging/", "type": "processing-pattern", "category": "db-messaging"},
+    {"pattern": "examples/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "external_contents/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "inquiry/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "jakarta_ee/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "nablarch_api/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "releases/", "type": "about", "category": "release-notes"},
+    {"pattern": "terms_of_use/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "development_tools/", "type": "development-tools", "category": "testing-framework"}
+  ],
+  "md": {},
+  "xlsx": {},
+  "xlsx_patterns": []
+}
diff --git a/tools/knowledge-creator/mappings/v1.4.json b/tools/knowledge-creator/mappings/v1.4.json
new file mode 100644
index 00000000..9dc60844
--- /dev/null
+++ b/tools/knowledge-creator/mappings/v1.4.json
@@ -0,0 +1,48 @@
+{
+  "rst": [
+    {"pattern": "extension_components/etl/", "type": "extension", "category": "etl"},
+    {"pattern": "extension_components/report/", "type": "extension", "category": "report"},
+    {"pattern": "extension_components/workflow/", "type": "extension", "category": "workflow"},
+    {"pattern": "extension_components/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/batch/nablarch_batch", "type": "processing-pattern", "category": "nablarch-batch"},
+    {"pattern": "application_framework/application_framework/batch/jsr352", "type": "processing-pattern", "category": "jakarta-batch"},
+    {"pattern": "application_framework/application_framework/batch/", "type": "processing-pattern", "category": "nablarch-batch"},
+    {"pattern": "application_framework/application_framework/web_service/rest", "type": "processing-pattern", "category": "restful-web-service"},
+    {"pattern": "application_framework/application_framework/web_service/http_messaging", "type": "processing-pattern", "category": "http-messaging"},
+    {"pattern": "application_framework/application_framework/web_service/", "type": "processing-pattern", "category": "restful-web-service"},
+    {"pattern": "application_framework/application_framework/web/", "type": "processing-pattern", "category": "web-application"},
+    {"pattern": "application_framework/application_framework/messaging/mom", "type": "processing-pattern", "category": "mom-messaging"},
+    {"pattern": "application_framework/application_framework/messaging/db", "type": "processing-pattern", "category": "db-messaging"},
+    {"pattern": "application_framework/application_framework/handlers/", "type": "component", "category": "handlers"},
+    {"pattern": "application_framework/application_framework/batch/jBatchHandler", "type": "component", "category": "handlers"},
+    {"pattern": "application_framework/application_framework/libraries/", "type": "component", "category": "libraries"},
+    {"pattern": "application_framework/adaptors/", "type": "component", "category": "adapters"},
+    {"pattern": "development_tools/testing_framework/", "type": "development-tools", "category": "testing-framework"},
+    {"pattern": "development_tools/toolbox/", "type": "development-tools", "category": "toolbox"},
+    {"pattern": "development_tools/java_static_analysis/", "type": "development-tools", "category": "java-static-analysis"},
+    {"pattern": "application_framework/application_framework/blank_project/", "type": "setup", "category": "blank-project"},
+    {"pattern": "application_framework/application_framework/configuration/", "type": "setup", "category": "configuration"},
+    {"pattern": "application_framework/setting_guide/", "type": "setup", "category": "setting-guide"},
+    {"pattern": "application_framework/application_framework/cloud_native/", "type": "setup", "category": "cloud-native"},
+    {"pattern": "about_nablarch/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/nablarch_architecture/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/nablarch/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "migration/", "type": "about", "category": "migration"},
+    {"pattern": "release_notes/", "type": "about", "category": "release-notes"},
+    {"pattern": "biz_samples/", "type": "guide", "category": "biz-samples"},
+    {"pattern": "application_framework/application_framework/messaging/", "type": "processing-pattern", "category": "db-messaging"},
+    {"pattern": "examples/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "external_contents/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "inquiry/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "jakarta_ee/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "nablarch_api/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "releases/", "type": "about", "category": "release-notes"},
+    {"pattern": "terms_of_use/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/application_framework/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "application_framework/", "type": "about", "category": "about-nablarch"},
+    {"pattern": "development_tools/", "type": "development-tools", "category": "testing-framework"}
+  ],
+  "md": {},
+  "xlsx": {},
+  "xlsx_patterns": []
+}
diff --git a/tools/knowledge-creator/scripts/clean.py b/tools/knowledge-creator/scripts/clean.py
index 31292eeb..8dd14a7e 100755
--- a/tools/knowledge-creator/scripts/clean.py
+++ b/tools/knowledge-creator/scripts/clean.py
@@ -104,8 +104,8 @@ def main():
     parser.add_argument(
         "--version",
         required=True,
-        choices=["6", "5", "all"],
-        help="Version to clean (6, 5, or all)"
+        choices=["6", "5", "1.4", "1.3", "1.2", "all"],
+        help="Version to clean (6, 5, 1.4, 1.3, 1.2, or all). 'all' cleans v6 and v5 only."
     )
     parser.add_argument("--yes", action="store_true",
                         help="Skip confirmation prompt")
diff --git a/tools/knowledge-creator/scripts/run.py b/tools/knowledge-creator/scripts/run.py
index c7734d3c..e37273d8 100755
--- a/tools/knowledge-creator/scripts/run.py
+++ b/tools/knowledge-creator/scripts/run.py
@@ -115,7 +115,8 @@ def main():
     parser = argparse.ArgumentParser(
         description="Knowledge Creator - Convert Nablarch documentation to AI-ready JSON"
     )
-    parser.add_argument("--version", required=True, choices=["6", "5", "all"])
+    parser.add_argument("--version", required=True, choices=["6", "5", "1.4", "1.3", "1.2", "all"],
+                        help="Version to process. 'all' processes v6 and v5 only (not v1.x).")
     parser.add_argument("--phase", type=str, default=None,
                         help="Phases to run (e.g. 'B', 'CD', 'BCDEF'). Default: all")
     parser.add_argument("--concurrency", type=int, default=4)
diff --git a/tools/knowledge-creator/scripts/step1_list_sources.py b/tools/knowledge-creator/scripts/step1_list_sources.py
index 34330fa0..9c144d15 100644
--- a/tools/knowledge-creator/scripts/step1_list_sources.py
+++ b/tools/knowledge-creator/scripts/step1_list_sources.py
@@ -19,7 +19,10 @@ def run(self):
         sources = []
 
         # 1. Official documentation (RST)
+        # Try nablarch-document first (v5/v6 pattern), then {version}_maintain (v1.x symlink pattern)
         rst_base = f"{self.ctx.repo}/.lw/nab-official/v{self.ctx.version}/nablarch-document/ja/"
+        if not os.path.exists(rst_base):
+            rst_base = f"{self.ctx.repo}/.lw/nab-official/v{self.ctx.version}/{self.ctx.version}_maintain/ja/"
         if os.path.exists(rst_base):
             for root, dirs, files in os.walk(rst_base):
                 dirs[:] = [d for d in dirs if not d.startswith("_")]
@@ -27,6 +30,13 @@ def run(self):
                     if f.endswith(".rst"):
                         rel_path = os.path.relpath(os.path.join(root, f), self.ctx.repo)
                         sources.append({"path": rel_path, "format": "rst", "filename": f})
+        else:
+            self.logger.warning(
+                f"RST source directory not found for version {self.ctx.version}. "
+                f"Run setup.sh or manually create a symlink at "
+                f".lw/nab-official/v{self.ctx.version}/nablarch-document or "
+                f".lw/nab-official/v{self.ctx.version}/{self.ctx.version}_maintain"
+            )
 
         # 2. Pattern documents (MD)
         pattern_dir = (
@@ -57,9 +67,9 @@ def run(self):
                 "filename": "Nablarch機能のセキュリティ対応表.xlsx"
             })
 
-        # 4. Release notes (Excel) - scan releases directory
-        releases_dir = f"{self.ctx.repo}/.lw/nab-official/v{self.ctx.version}/nablarch-document/ja/releases/"
-        if os.path.exists(releases_dir):
+        # 4. Release notes (Excel) - scan releases directory (derive from rst_base)
+        releases_dir = os.path.join(rst_base, "releases/") if os.path.exists(rst_base) else ""
+        if releases_dir and os.path.exists(releases_dir):
             for f in os.listdir(releases_dir):
                 if f.endswith(".xlsx"):
                     rel_path = os.path.relpath(os.path.join(releases_dir, f), self.ctx.repo)
diff --git a/tools/knowledge-creator/tests/e2e/generate_expected.py b/tools/knowledge-creator/tests/e2e/generate_expected.py
index 4162593a..33bb346d 100644
--- a/tools/knowledge-creator/tests/e2e/generate_expected.py
+++ b/tools/knowledge-creator/tests/e2e/generate_expected.py
@@ -62,7 +62,10 @@ def list_sources(repo: str, version: str) -> list:
     sources = []
 
     # RST
+    # Try nablarch-document first (v5/v6 pattern), then {version}_maintain (v1.x symlink pattern)
     rst_base = os.path.join(repo, f".lw/nab-official/v{version}/nablarch-document/ja/")
+    if not os.path.exists(rst_base):
+        rst_base = os.path.join(repo, f".lw/nab-official/v{version}/{version}_maintain/ja/")
     if os.path.exists(rst_base):
         for root, dirs, files in os.walk(rst_base):
             dirs[:] = [d for d in dirs if not d.startswith("_")]
@@ -88,9 +91,9 @@ def list_sources(repo: str, version: str) -> list:
         sources.append({"path": os.path.relpath(xlsx_path, repo),
                         "format": "xlsx", "filename": "Nablarch機能のセキュリティ対応表.xlsx"})
 
-    # Release notes Excel
-    releases_dir = os.path.join(repo, f".lw/nab-official/v{version}/nablarch-document/ja/releases/")
-    if os.path.exists(releases_dir):
+    # Release notes Excel (derive from rst_base)
+    releases_dir = os.path.join(rst_base, "releases/") if os.path.exists(rst_base) else ""
+    if releases_dir and os.path.exists(releases_dir):
         for f in sorted(os.listdir(releases_dir)):
             if f.endswith(".xlsx"):
                 sources.append({"path": os.path.relpath(os.path.join(releases_dir, f), repo),
@@ -104,11 +107,11 @@ def list_sources(repo: str, version: str) -> list:
 # ============================================================
 
 def classify_rst(path: str, rst_mapping: list):
-    marker = "nablarch-document/ja/"
-    idx = path.find(marker)
-    if idx < 0:
+    # Match either nablarch-document/ja/ or {anything}_maintain/ja/
+    m = re.search(r'/(?:nablarch-document|[^/]+_maintain)/ja/', path)
+    if not m:
         return None, None, None
-    rel_path = path[idx + len(marker):]
+    rel_path = path[m.end():]
 
     if rel_path == "index.rst":
         return "about", "about-nablarch", ""
@@ -145,10 +148,10 @@ def generate_id(filename: str, format: str, category: str = None,
         base_name = filename
 
     if base_name == "index" and source_path and matched_pattern is not None:
-        marker = "nablarch-document/ja/"
-        marker_idx = source_path.find(marker)
-        if marker_idx >= 0:
-            rst_rel = source_path[marker_idx + len(marker):]
+        # Match either nablarch-document/ja/ or {anything}_maintain/ja/
+        m = re.search(r'/(?:nablarch-document|[^/]+_maintain)/ja/', source_path)
+        if m:
+            rst_rel = source_path[m.end():]
             pattern_clean = matched_pattern.rstrip("/")
             if not pattern_clean:
                 base_name = "top"
diff --git a/tools/knowledge-creator/tests/ut/test_kc_sh.py b/tools/knowledge-creator/tests/ut/test_kc_sh.py
index e0d9a895..35983aad 100644
--- a/tools/knowledge-creator/tests/ut/test_kc_sh.py
+++ b/tools/knowledge-creator/tests/ut/test_kc_sh.py
@@ -89,6 +89,43 @@ def test_fix_with_target_passes_target(self, stub_env):
         assert "--target test-id" in lines[0]
 
 
+class TestV1xVersions:
+
+    @pytest.mark.parametrize("version", ["1.4", "1.3", "1.2"])
+    def test_gen_v1x_calls_clean_then_run(self, stub_env, version):
+        result = _run_nc(["gen", version], stub_env)
+        lines = [l for l in result.stdout.splitlines() if l.startswith("CMD:")]
+        assert len(lines) == 2, f"Expected 2 commands for version {version}, got: {lines}"
+        assert "scripts/clean.py" in lines[0] and f"--version {version}" in lines[0]
+        assert "scripts/run.py" in lines[1] and f"--version {version}" in lines[1]
+
+    @pytest.mark.parametrize("version", ["1.4", "1.3", "1.2"])
+    def test_gen_v1x_resume_skips_clean(self, stub_env, version):
+        result = _run_nc(["gen", version, "--resume"], stub_env)
+        lines = [l for l in result.stdout.splitlines() if l.startswith("CMD:")]
+        assert len(lines) == 1, f"Expected 1 command for version {version} --resume, got: {lines}"
+        assert "scripts/run.py" in lines[0]
+        assert f"--version {version}" in lines[0]
+
+    @pytest.mark.parametrize("version", ["1.4", "1.3", "1.2"])
+    def test_regen_v1x_uses_command_regen(self, stub_env, version):
+        result = _run_nc(["regen", version], stub_env)
+        lines = [l for l in result.stdout.splitlines() if l.startswith("CMD:")]
+        assert len(lines) == 1
+        assert "scripts/run.py" in lines[0]
+        assert "--command regen" in lines[0]
+        assert f"--version {version}" in lines[0]
+
+    @pytest.mark.parametrize("version", ["1.4", "1.3", "1.2"])
+    def test_fix_v1x_uses_command_fix(self, stub_env, version):
+        result = _run_nc(["fix", version], stub_env)
+        lines = [l for l in result.stdout.splitlines() if l.startswith("CMD:")]
+        assert len(lines) == 1
+        assert "scripts/run.py" in lines[0]
+        assert "--command fix" in lines[0]
+        assert f"--version {version}" in lines[0]
+
+
 class TestErrorHandling:
 
     def test_unknown_command_exits_nonzero(self, stub_env):