Rename all arch references to plano across the codebase

Complete rebrand from "Arch"/"archgw" to "Plano" including:
- Config files: arch_config_schema.yaml, workflow, demo configs
- Environment variables: ARCH_CONFIG_* → PLANO_CONFIG_*
- Python CLI: variables, functions, file paths, docker mounts
- Rust crates: config paths, log messages, metadata keys
- Docker/build: Dockerfile, supervisord, .dockerignore, .gitignore
- Docker Compose: volume mounts and env vars across all demos/tests
- GitHub workflows: job/step names
- Shell scripts: log messages
- Demos: Python code, READMEs, VS Code configs, Grafana dashboard
- Docs: RST includes, code comments, config references
- Package metadata: package.json, pyproject.toml, uv.lock

External URLs (docs.archgw.com, github.com/katanemo/archgw) left as-is.

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

tests/archgw/docker-compose.yaml

@@ -5,7 +5,7 @@ services:
       - "10000:10000"
       - "12000:12000"
     volumes:
-      - ./config.yaml:/app/arch_config.yaml
+      - ./config.yaml:/app/plano_config.yaml
       - /etc/ssl/cert.pem:/etc/ssl/cert.pem
     extra_hosts:
       - "host.docker.internal:host-gateway"

tests/archgw/pyproject.toml

@@ -1,7 +1,7 @@
 [project]
-name = "archgw_mock_tests"
+name = "plano_mock_tests"
 version = "0.0.1"
-description = "archgw mock tests"
+description = "plano mock tests"
 authors = [{name = "Katanemo Labs, Inc", email = "info@katanemo.com"}]
 license = {text = "Apache 2.0"}
 requires-python = ">=3.12"

tests/archgw/uv.lock

@@ -2,7 +2,7 @@ version = 1
 requires-python = ">=3.12"
 
 [[package]]
-name = "archgw-mock-tests"
+name = "plano-mock-tests"
 version = "0.0.1"
 source = { editable = "." }
 dependencies = [

tests/e2e/README.md

@@ -6,14 +6,14 @@ To be able to run e2e tests successfully run_e2e_script prepares environment in
 
 1. build and start weather_forecast demo (using docker compose)
 1. build, install and start model server async (using uv)
-1. build and start arch gateway (using docker compose)
+1. build and start Plano gateway (using docker compose)
 1. wait for model server to be ready
-1. wait for arch gateway to be ready
+1. wait for Plano gateway to be ready
 1. start e2e tests (using uv)
    1. runs llm gateway tests for llm routing
    2. runs prompt gateway tests to test function calling, parameter gathering and summarization
 2. cleanup
-   1. stops arch gateway
+   1. stops Plano gateway
    2. stops model server
    3. stops weather_forecast demo
 

tests/e2e/docker-compose.yaml

@@ -8,7 +8,7 @@ services:
       - "12000:12000"
       - "19901:9901"
     volumes:
-      - ../../demos/samples_python/weather_forecast/arch_config.yaml:/app/arch_config.yaml
+      - ../../demos/samples_python/weather_forecast/arch_config.yaml:/app/plano_config.yaml
       - /etc/ssl/cert.pem:/etc/ssl/cert.pem
     extra_hosts:
       - "host.docker.internal:host-gateway"

tests/e2e/run_e2e_tests.sh

@@ -34,7 +34,7 @@ uv sync
 uv tool install .
 cd -
 
-log building docker image for arch gateway
+log building docker image for plano gateway
 log ======================================
 cd ../../
 planoai build
@@ -43,7 +43,7 @@ cd -
 # Once we build plano we have to install the dependencies again to a new virtual environment.
 uv sync
 
-log startup arch gateway with function calling demo
+log startup plano gateway with function calling demo
 cd ../../
 planoai down
 planoai up demos/samples_python/weather_forecast/config.yaml
@@ -53,11 +53,11 @@ log running e2e tests for prompt gateway
 log ====================================
 uv run pytest test_prompt_gateway.py
 
-log shutting down the arch gateway service for prompt_gateway demo
+log shutting down the plano gateway service for prompt_gateway demo
 log ===============================================================
 planoai down
 
-log startup arch gateway with model alias routing demo
+log startup plano gateway with model alias routing demo
 cd ../../
 planoai up demos/use_cases/model_alias_routing/config_with_aliases.yaml
 cd -
@@ -70,7 +70,7 @@ log running e2e tests for openai responses api client
 log ========================================
 uv run pytest test_openai_responses_api_client.py
 
-log startup arch gateway with state storage for openai responses api client demo
+log startup plano gateway with state storage for openai responses api client demo
 planoai down
 planoai up config_memory_state_v1_responses.yaml
 

tests/e2e/run_model_alias_tests.sh

@@ -34,7 +34,7 @@ cd -
 uv sync
 
 # Start gateway with model alias routing config
-log "startup arch gateway with model alias routing demo"
+log "startup plano gateway with model alias routing demo"
 cd ../../
 planoai down || true
 planoai up demos/use_cases/model_alias_routing/config_with_aliases.yaml

tests/e2e/run_prompt_gateway_tests.sh

@@ -39,7 +39,7 @@ docker compose up weather_forecast_service --build -d
 cd -
 
 # Start gateway with prompt_gateway config
-log "startup arch gateway with function calling demo"
+log "startup plano gateway with function calling demo"
 cd ../../
 planoai down || true
 planoai up demos/samples_python/weather_forecast/config.yaml

tests/e2e/run_responses_state_tests.sh

@@ -33,7 +33,7 @@ cd -
 uv sync
 
 # Start gateway with state storage config
-log "startup arch gateway with state storage config"
+log "startup plano gateway with state storage config"
 cd ../../
 planoai down || true
 planoai up tests/e2e/config_memory_state_v1_responses.yaml