Add archify-vscode-ext skill: Archify diagrams and models for the Archify Diagram Viewer extension

Model tasks (validate, list, scaffold, resolve), diagram tasks (validate,
render), the bundled Archify 3.0.1 runtime and yaml parser under
scripts/vendor, references for authoring, formats and folders, and the
online-shop example model.

scripts/.scripts/runtime/Taskfile.yml

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+# https://taskfile.dev
+
+version: "3"
+
+tasks:
+  sync:
+    desc: 'Refresh vendor/archify and vendor/yaml from local checkouts -- [<archify-checkout>] [--yaml-src <path>]'
+    cmds:
+      - |
+        ./.scripts/runtime/api/archify--sync.sh {{ .CLI_ARGS }}
+    silent: true

scripts/.scripts/runtime/api/archify--sync.sh

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+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#   archify-vscode-ext Agent Skill (MIT)
+# -------------------------------------------------------------------------------------
+
+. ./.scripts/runtime/lib/--index.sh
+
+_runtime__archify__sync "$@"

scripts/.scripts/runtime/lib/--env-vars-reader.sh

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+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#   archify-vscode-ext Agent Skill (MIT)
+# -------------------------------------------------------------------------------------
+
+# CLI-only module: all input comes from flags. No environment variables are read.

scripts/.scripts/runtime/lib/--env-vars-validator.sh

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+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#   archify-vscode-ext Agent Skill (MIT)
+# -------------------------------------------------------------------------------------
+
+# CLI-only module: nothing to validate.

scripts/.scripts/runtime/lib/--index-api.sh

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+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#   archify-vscode-ext Agent Skill (MIT)
+# -------------------------------------------------------------------------------------
+
+. ./.scripts/runtime/lib/-archify--sync.sh

scripts/.scripts/runtime/lib/--index.sh

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+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#   archify-vscode-ext Agent Skill (MIT)
+# -------------------------------------------------------------------------------------
+. ./.scripts/loggers/lib/--index.sh
+. ./.scripts/runtime/lib/--env-vars-reader.sh
+. ./.scripts/runtime/lib/--env-vars-validator.sh
+. ./.scripts/runtime/lib/--index-api.sh

scripts/.scripts/runtime/lib/-archify--sync.sh

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+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#   archify-vscode-ext Agent Skill (MIT)
+# -------------------------------------------------------------------------------------
+
+# Refreshes vendor/archify and vendor/yaml from local checkouts.
+# Flags: [<archify-checkout>] [--yaml-src <node_modules/yaml>]; see src/tools/sync-archify.mjs.
+_runtime__archify__sync() {
+	_loggers_info "Syncing the Archify runtime into vendor/"
+	node ./src/tools/sync-archify.mjs "$@"
+}