chore: update Docker configuration and CI/CD setup

- Removed Dockerfile and Dockerfile.test as part of the transition to a pre-built image.
- Updated .dockerignore and .gitignore to reflect new build context and ignored files.
- Modified docker-compose.yml to use the new image for the application.
- Enhanced documentation in AGENTS.md and README.md to include CI/CD details and release process.
- Added new dependencies for commit linting and semantic release in package.json and pnpm-lock.yaml.

This commit streamlines the Docker setup and improves the CI/CD workflow with Gitea Actions.

CONTRIBUTING.md

@@ -17,23 +17,23 @@ Types: `feat`, `fix`, `docs`, `style`, `refactor`, `test`, `chore`
 ## Pull requests
 
 - Target `develop` for features; `main` for release/hotfix
-- CI `test` job must pass
+- CI quality jobs (`web`, `api`) must pass
 - At least one approval
 - Rebase/merge when up to date with target branch
 - Delete branch after merge
 
 ## Versioning
 
-- SemVer in [`VERSION`](VERSION)
-- Bump version in `release/*` or `hotfix/*` branches
-- Tag `vX.Y.Z` on `main` after release merge
+- SemVer через [semantic-release](https://semantic-release.gitbook.io/) на push в `main`
+- Не править версию вручную; тег `vX.Y.Z` ставит CI
+- Подробнее: [`docs/releasing.md`](docs/releasing.md)
 
 ## Branch protection (Gitea)
 
 Configure for **main** and **develop**:
 
 - Require pull request reviews
-- Require status checks (`test`)
+- Require status checks (`CI` / quality jobs `web`, `api`)
 - Require branches to be up to date
 - No force push, no deletion
 
@@ -54,7 +54,4 @@ pnpm --filter web dev
 
 ## Release process
 
-1. `git checkout -b release/v0.2.0 develop`
-2. Bump `VERSION`, fix release issues
-3. PR to `main` → merge → tag `v0.2.0`
-4. Merge release branch back to `develop`
+Релизы делает workflow **CD** на push в `main` (semantic-release + bake). Не создавать ветки `release/*` и не bump'ать файлы версии вручную. См. [`docs/releasing.md`](docs/releasing.md).