Restructure to skill-manager conventions

- Move the TypeScript project under scripts/ (src, tsconfig,
  package.json, pnpm lockfile/workspace, canonical .gitignore);
  drop the npm package-lock
- Add scripts/Taskfile.yml aggregator plus .scripts modules
  (loggers, base, cli) with build, run, and validate tasks
- Move the six SKILL-*.md docs into references/ with kebab names
  and extract the connector-routing sections from SKILL.md into
  references/routing-best-practices.md (SKILL.md 666 -> ~310 lines)
- Add license/metadata/compatibility frontmatter, an Available
  scripts section, and update all CLI paths in README and references

skill-manager validate: 13/13 passed, 0 warnings.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/Taskfile.yml

@@ -0,0 +1,39 @@
+# https://taskfile.dev
+
+version: "3"
+
+includes:
+  base: ./.scripts/base/Taskfile.yml
+  cli: ./.scripts/cli/Taskfile.yml
+
+tasks:
+  default:
+    cmds:
+      - task --list-all
+    silent: true
+
+  build:
+    desc: Compile TypeScript source to dist/
+    cmds:
+      - task: cli:build
+    silent: true
+
+  run:
+    desc: |
+      Run any drawio-tools action against a .drawio file.
+      Usage: task run -- --file="/path/to/diagram.drawio" --action=<action> [--page <index>]
+    cmds:
+      - task: cli:run
+        vars:
+          CLI_ARGS: "{{ .CLI_ARGS }}"
+    silent: true
+
+  validate:
+    desc: |
+      Validate a .drawio file (XML well-formedness + required structure).
+      Usage: task validate -- --file="/path/to/diagram.drawio"
+    cmds:
+      - task: cli:validate
+        vars:
+          CLI_ARGS: "{{ .CLI_ARGS }}"
+    silent: true