chore: Add PyPI package support for uvx/pip installation (#1764)

* Initial plan

* Add package structure and resource path utilities

- Created langbot/ package with __init__.py and __main__.py entry point
- Added paths utility to find frontend and resource files from package installation
- Updated config loading to use resource paths
- Updated frontend serving to use resource paths
- Added MANIFEST.in for package data inclusion
- Updated pyproject.toml with build system and entry points

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Add PyPI publishing workflow and update license

- Created GitHub Actions workflow to build frontend and publish to PyPI
- Added license field to pyproject.toml to fix deprecation warning
- Updated .gitignore to exclude build artifacts
- Tested package building successfully

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Add PyPI installation documentation

- Created PYPI_INSTALLATION.md with detailed installation and usage instructions
- Updated README.md to feature uvx/pip installation as recommended method
- Updated README_EN.md with same changes for English documentation

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Address code review feedback

- Made package-data configuration more specific to langbot package only
- Improved path detection with caching to avoid repeated file I/O
- Removed sys.path searching which was incorrect for package data
- Removed interactive input() call for non-interactive environment compatibility
- Simplified error messages for version check

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Fix code review issues

- Use specific exception types instead of bare except
- Fix misleading comments about directory levels
- Remove redundant existence check before makedirs with exist_ok=True
- Use context manager for file opening to ensure proper cleanup

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* Simplify package configuration and document behavioral differences

- Removed redundant package-data configuration, relying on MANIFEST.in
- Added documentation about behavioral differences between package and source installation
- Clarified that include-package-data=true uses MANIFEST.in for data files

Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>

* chore: update pyproject.toml

* chore: try pack templates in langbot/

* chore: update

* chore: update

* chore: update

* chore: update

* chore: update

* chore: adjust dir structure

* chore: fix imports

* fix: read default-pipeline-config.json

* fix: read default-pipeline-config.json

* fix: tests

* ci: publish pypi

* chore: bump version 4.6.0-beta.1 for testing

* chore: add templates/**

* fix: send adapters and requesters icons

* chore: bump version 4.6.0b2 for testing

* chore: add platform field for docker-compose.yaml

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RockChinQ <45992437+RockChinQ@users.noreply.github.com>
Co-authored-by: Junyan Qin <rockchinq@gmail.com>

src/langbot/pkg/config/impls/json.py

@@ -0,0 +1,71 @@
+import os
+import json
+import importlib.resources as resources
+
+from langbot.pkg.config import model as file_model
+
+
+class JSONConfigFile(file_model.ConfigFile):
+    """JSON config file"""
+
+    def __init__(
+        self,
+        config_file_name: str,
+        template_resource_name: str = None,
+        template_data: dict = None,
+    ) -> None:
+        self.config_file_name = config_file_name
+        self.template_resource_name = template_resource_name
+        self.template_data = template_data
+
+    def exists(self) -> bool:
+        return os.path.exists(self.config_file_name)
+
+    async def get_template_file_str(self) -> str:
+        if self.template_resource_name is None:
+            return None
+
+        with (
+            resources.files('langbot.templates').joinpath(self.template_resource_name).open('r', encoding='utf-8') as f
+        ):
+            return f.read()
+
+    async def create(self):
+        if await self.get_template_file_str() is not None:
+            with open(self.config_file_name, 'w', encoding='utf-8') as f:
+                f.write(await self.get_template_file_str())
+        elif self.template_data is not None:
+            with open(self.config_file_name, 'w', encoding='utf-8') as f:
+                json.dump(self.template_data, f, indent=4, ensure_ascii=False)
+        else:
+            raise ValueError('template_file_name or template_data must be provided')
+
+    async def load(self, completion: bool = True) -> dict:
+        if not self.exists():
+            await self.create()
+
+        template_file_str = await self.get_template_file_str()
+
+        if template_file_str is not None:
+            self.template_data = json.loads(template_file_str)
+
+        with open(self.config_file_name, 'r', encoding='utf-8') as f:
+            try:
+                cfg = json.load(f)
+            except json.JSONDecodeError as e:
+                raise Exception(f'Syntax error in config file {self.config_file_name}: {e}')
+
+        if completion:
+            for key in self.template_data:
+                if key not in cfg:
+                    cfg[key] = self.template_data[key]
+
+        return cfg
+
+    async def save(self, cfg: dict):
+        with open(self.config_file_name, 'w', encoding='utf-8') as f:
+            json.dump(cfg, f, indent=4, ensure_ascii=False)
+
+    def save_sync(self, cfg: dict):
+        with open(self.config_file_name, 'w', encoding='utf-8') as f:
+            json.dump(cfg, f, indent=4, ensure_ascii=False)

src/langbot/pkg/config/impls/pymodule.py

@@ -0,0 +1,66 @@
+import os
+import shutil
+import importlib
+import logging
+
+from .. import model as file_model
+
+
+class PythonModuleConfigFile(file_model.ConfigFile):
+    """Python module config file"""
+
+    config_file_name: str = None
+    """Config file name"""
+
+    template_file_name: str = None
+    """Template file name"""
+
+    def __init__(self, config_file_name: str, template_file_name: str) -> None:
+        self.config_file_name = config_file_name
+        self.template_file_name = template_file_name
+
+    def exists(self) -> bool:
+        return os.path.exists(self.config_file_name)
+
+    async def create(self):
+        shutil.copyfile(self.template_file_name, self.config_file_name)
+
+    async def load(self, completion: bool = True) -> dict:
+        module_name = os.path.splitext(os.path.basename(self.config_file_name))[0]
+        module = importlib.import_module(module_name)
+
+        cfg = {}
+
+        allowed_types = (int, float, str, bool, list, dict)
+
+        for key in dir(module):
+            if key.startswith('__'):
+                continue
+
+            if not isinstance(getattr(module, key), allowed_types):
+                continue
+
+            cfg[key] = getattr(module, key)
+
+        # complete from template module file
+        if completion:
+            module_name = os.path.splitext(os.path.basename(self.template_file_name))[0]
+            module = importlib.import_module(module_name)
+
+            for key in dir(module):
+                if key.startswith('__'):
+                    continue
+
+                if not isinstance(getattr(module, key), allowed_types):
+                    continue
+
+                if key not in cfg:
+                    cfg[key] = getattr(module, key)
+
+        return cfg
+
+    async def save(self, data: dict):
+        logging.warning('Python module config file does not support saving')
+
+    def save_sync(self, data: dict):
+        logging.warning('Python module config file does not support saving')

src/langbot/pkg/config/impls/yaml.py

@@ -0,0 +1,71 @@
+import os
+import yaml
+import importlib.resources as resources
+
+from langbot.pkg.config import model as file_model
+
+
+class YAMLConfigFile(file_model.ConfigFile):
+    """YAML config file"""
+
+    def __init__(
+        self,
+        config_file_name: str,
+        template_resource_name: str = None,
+        template_data: dict = None,
+    ) -> None:
+        self.config_file_name = config_file_name
+        self.template_resource_name = template_resource_name
+        self.template_data = template_data
+
+    def exists(self) -> bool:
+        return os.path.exists(self.config_file_name)
+
+    async def get_template_file_str(self) -> str:
+        if self.template_resource_name is None:
+            return None
+
+        with (
+            resources.files('langbot.templates').joinpath(self.template_resource_name).open('r', encoding='utf-8') as f
+        ):
+            return f.read()
+
+    async def create(self):
+        if await self.get_template_file_str() is not None:
+            with open(self.config_file_name, 'w', encoding='utf-8') as f:
+                f.write(await self.get_template_file_str())
+        elif self.template_data is not None:
+            with open(self.config_file_name, 'w', encoding='utf-8') as f:
+                yaml.dump(self.template_data, f, indent=4, allow_unicode=True)
+        else:
+            raise ValueError('template_file_name or template_data must be provided')
+
+    async def load(self, completion: bool = True) -> dict:
+        if not self.exists():
+            await self.create()
+
+        template_file_str = await self.get_template_file_str()
+
+        if template_file_str is not None:
+            self.template_data = yaml.load(template_file_str, Loader=yaml.FullLoader)
+
+        with open(self.config_file_name, 'r', encoding='utf-8') as f:
+            try:
+                cfg = yaml.load(f, Loader=yaml.FullLoader)
+            except yaml.YAMLError as e:
+                raise Exception(f'Syntax error in config file {self.config_file_name}: {e}')
+
+        if completion:
+            for key in self.template_data:
+                if key not in cfg:
+                    cfg[key] = self.template_data[key]
+
+        return cfg
+
+    async def save(self, cfg: dict):
+        with open(self.config_file_name, 'w', encoding='utf-8') as f:
+            yaml.dump(cfg, f, indent=4, allow_unicode=True)
+
+    def save_sync(self, cfg: dict):
+        with open(self.config_file_name, 'w', encoding='utf-8') as f:
+            yaml.dump(cfg, f, indent=4, allow_unicode=True)