feat(pyproject): release v1.7.0 — Python pyproject.toml version bump

Add internal/pyproject package with ReadVersion and WriteVersion for
pyproject.toml files. Reads [project].version (PEP 621) first, then
falls back to [tool.poetry].version. Section boundaries are detected
via TOML's rule that headers always start at the beginning of a line
(\n[ pattern), so inline arrays with [ characters don't interfere.

Config follows the established multi-value pattern:
- python.pyproject_toml: single path (opt-in, no default)
- python.pyproject_tomls: list for monorepos (overrides single)
- --pyproject flag overrides pyproject_toml and clears pyproject_tomls

100% per-package statement coverage maintained across all 14 packages;
FuzzReadVersion and FuzzWriteVersion added per fuzzing guidelines.

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

docs/content/changelog.md

@@ -3,6 +3,12 @@ title: Changelog
 weight: 50
 ---
 
+## v1.7.0 — 2026-07-12
+
+### Added
+
+- **Python `pyproject.toml` support** — opt-in via `python.pyproject_toml` (single) or `python.pyproject_tomls` (list); reads `[project].version` (PEP 621) first, then `[tool.poetry].version`; original formatting preserved; `--pyproject <path>` CLI flag for one-off overrides
+
 ## v1.6.0 — 2026-07-11
 
 ### Added

docs/content/configuration.md

@@ -53,6 +53,14 @@ gradle:                                              # opt-in — omit section t
   #   - "build.gradle"
   #   - "module-a/build.gradle"
 
+python:                                              # opt-in — omit section to skip
+  # pyproject_toml: "pyproject.toml"                 # PEP 621 [project].version or [tool.poetry].version
+
+  # Monorepo: list overrides pyproject_toml.
+  # pyproject_tomls:
+  #   - "pyproject.toml"
+  #   - "packages/cli/pyproject.toml"
+
 gitlab:
   url: "https://gitlab.example.com"                  # or env CI_SERVER_URL
   token: ""                                          # prefer env GITLAB_TOKEN
@@ -128,6 +136,27 @@ node:
     - "packages/backend/package.json"
 ```
 
+## Python support
+
+The `python` section is opt-in — if omitted, no `pyproject.toml` is touched. `releaser` reads `[project].version` (PEP 621) first; if not found it falls back to `[tool.poetry].version`. The original file formatting is preserved on write.
+
+```yaml
+python:
+  pyproject_toml: "pyproject.toml"
+```
+
+Use `pyproject_tomls` for monorepos:
+
+```yaml
+python:
+  pyproject_tomls:
+    - "pyproject.toml"
+    - "packages/cli/pyproject.toml"
+    - "packages/lib/pyproject.toml"
+```
+
+The `--pyproject <path>` CLI flag sets a single path and clears `pyproject_tomls`.
+
 ## Gradle support
 
 The `gradle` section is opt-in — if omitted, no build file is touched. Both Groovy DSL (`version = '1.2.3'`) and Kotlin DSL (`version = "1.2.3"`) are supported; the original quote style is preserved on write.

docs/content/usage.md

@@ -40,6 +40,7 @@ releaser --verbose --dry-run
 | `--tag-prefix <prefix>` | `""` | Prefix for version tags (e.g. `v` → `v1.2.3`) |
 | `--pom <path>` | `pom.xml` | Path to pom.xml relative to repo root |
 | `--gradle <path>` | — | Override `gradle.build_file` from config |
+| `--pyproject <path>` | — | Override `python.pyproject_toml` from config |
 | `--changelog-file <path>` | `CHANGELOG.md` | Path to changelog file |
 | `--release-env-file <path>` | `release.env` | Path for dotenv artifact; pass `""` to disable |
 | `--no-commit` | false | Update version files but stop before committing |