chore: dev-env and e2e improvements (#331)

Makes a few small improvements to `dev-env.zsh` and the E2E
configuration:

- `_choose-scope` now highlights `database` by default because its the
  most common usage.
- `E2E_PARALLEL` now defaults to 4 because this is a good setting for
  all fixtures.
- The `use-*` functions now set `E2E_FIXTURE`. This makes it so that
  instead of setting `E2E_FIXTURE` explicitly, you can do:

```sh
use-lima
make test-e2e
```

or

```sh
use-dev-lima
make test-e2e
```

Author: jason-lynch

Makefile

@@ -9,7 +9,7 @@ CONTROL_PLANE_IMAGE_REPO ?= host.docker.internal:5000/control-plane
 TEST_RERUN_FAILS ?= 0
 TEST_DISABLE_CACHE ?= 0
 E2E_FIXTURE ?=
-E2E_PARALLEL ?= 8
+E2E_PARALLEL ?= 4
 E2E_RUN ?=
 E2E_SKIP_CLEANUP ?= 0
 E2E_DEBUG ?= 0

hack/dev-env.zsh

@@ -71,7 +71,7 @@ _use-test-config() {
 
 _choose-scope() {
 	# (j:\n:) joins the array with newlines
-	local scope_choice=$(echo "host\ndatabase" | sk)
+	local scope_choice=$(echo "database\nhost" | sk)
 
 	if [[ -z "${scope_choice}" ]]; then
 		return 1
@@ -232,6 +232,7 @@ _psql-local() {
 
 use-compose() {
 	export CP_ENV=compose
+	unset E2E_FIXTURE
 
 	_update-restish-config \
 		http://localhost:3000 \
@@ -244,6 +245,7 @@ use-compose() {
 
 use-dev-lima() {
 	export CP_ENV=dev-lima
+	export E2E_FIXTURE=dev-lima
 
 	_update-restish-config \
 		http://localhost:3000 \
@@ -261,12 +263,14 @@ use-dev-lima() {
 
 use-lima() {
 	export CP_ENV=lima
+	export E2E_FIXTURE=lima
 
 	_use-test-config
 }
 
 use-ec2() {
 	export CP_ENV=ec2
+	export E2E_FIXTURE=ec2
 
 	_use-test-config
 }