fix: bundle altimate_python_packages into dbt-tools dist for Python bridge

`bun build` bundles all JS into a single `dist/index.js`, causing
`import.meta.url` to resolve to the bundle location instead of the
original `@altimateai/dbt-integration/dist/` directory. This meant
`PYTHONPATH` pointed to a nonexistent `altimate_python_packages/` dir,
breaking `dbt_core_integration` imports.

- Add `script/copy-python.ts` post-build step that copies
  `altimate_python_packages/` from the npm package into `dist/`
- Remove developer-only build instructions from `/dbt-cli` skill

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: suryaiyer95

.opencode/skills/dbt-cli/SKILL.md

@@ -37,8 +37,6 @@ altimate-dbt init --python-path /path      # Override Python interpreter
 
 This writes `~/.altimate-code/dbt.json`. Run `altimate-dbt doctor` to verify everything is healthy.
 
-If `altimate-dbt` is not found, the binary lives at `packages/dbt-tools/bin/altimate-dbt` in the altimate-code repo. Build with `bun run --cwd packages/dbt-tools build` if `dist/` is missing.
-
 ## Commands
 
 ### Health & Info

packages/dbt-tools/package.json

@@ -7,7 +7,7 @@
     "altimate-dbt": "./bin/altimate-dbt"
   },
   "scripts": {
-    "build": "bun build src/index.ts --outdir dist --target node --format esm",
+    "build": "bun build src/index.ts --outdir dist --target node --format esm && bun run script/copy-python.ts",
     "typecheck": "tsc --noEmit",
     "test": "bun test --timeout 30000"
   },

packages/dbt-tools/script/copy-python.ts

@@ -0,0 +1,9 @@
+import { cpSync } from "fs"
+import { dirname, join } from "path"
+
+const resolved = require.resolve("@altimateai/dbt-integration")
+const source = join(dirname(resolved), "altimate_python_packages")
+const target = join(import.meta.dir, "..", "dist", "altimate_python_packages")
+
+cpSync(source, target, { recursive: true })
+console.log(`Copied altimate_python_packages → dist/`)