feat(parser): реализован парсинг новых файлов

- Добавлена поддержка формата *.xyz, что расширило возможности анализа проектов.
- Реализована функция `parse_xyz` в файле [`archdoc-core/src/parser.rs`](archdoc-core/src/parser.rs:42) для чтения и валидации содержимого.
- Обновлены тесты в [`archdoc-core/tests/parser_tests.rs`](archdoc-core/tests/parser_tests.rs:15) для покрытия нового формата.
- Обновлена документация в `README.md` с примерами использования нового парсера.

archdoc-cli/docs/architecture/files/.._test-project_src_utils.py.md

@@ -0,0 +1,194 @@
+# File: ../test-project/src/utils.py
+
+- **Module:** ../test-project/src/utils.py
+- **Defined symbols:** 4
+- **Imports:** 2
+
+<!-- MANUAL:BEGIN -->
+## File intent (manual)
+<FILL_MANUALLY>
+<!-- MANUAL:END -->
+
+---
+
+## Imports & file-level dependencies
+<!-- ARCHDOC:BEGIN section=file_imports -->
+> Generated. Do not edit inside this block.
+- json
+- os
+<!-- ARCHDOC:END section=file_imports -->
+
+---
+
+## Symbols index
+<!-- ARCHDOC:BEGIN section=symbols_index -->
+> Generated. Do not edit inside this block.
+- [load_config](.._test-project_src_utils.py#load_config)
+- [save_config](.._test-project_src_utils.py#save_config)
+- [get_file_size](.._test-project_src_utils.py#get_file_size)
+- [format_bytes](.._test-project_src_utils.py#format_bytes)
+<!-- ARCHDOC:END section=symbols_index -->
+
+---
+
+## Symbol details
+
+<!-- ARCHDOC:BEGIN symbol id=load_config --><a id="load_config"></a>
+
+### `load_config`
+- **Kind:** Function
+- **Signature:** `def load_config(...)`
+- **Docstring:** `No documentation available`
+
+#### What it does
+<!-- ARCHDOC:BEGIN section=purpose -->
+extracted from AST
+<!-- ARCHDOC:END section=purpose -->
+
+#### Relations
+<!-- ARCHDOC:BEGIN section=relations -->
+**Outbound calls (best-effort):**
+
+**Inbound (used by) (best-effort):**
+<!-- ARCHDOC:END section=relations -->
+
+#### Integrations (heuristic)
+<!-- ARCHDOC:BEGIN section=integrations -->
+- HTTP: no
+- DB: no
+- Queue/Tasks: no
+<!-- ARCHDOC:END section=integrations -->
+
+#### Risk / impact
+<!-- ARCHDOC:BEGIN section=impact -->
+- fan-in: 0
+- fan-out: 0
+- cycle participant: no
+- critical: no
+<!-- ARCHDOC:END section=impact -->
+
+<!-- MANUAL:BEGIN -->
+#### Manual notes
+<FILL_MANUALLY>
+<!-- MANUAL:END -->
+<!-- ARCHDOC:END symbol id=load_config -->
+
+<!-- ARCHDOC:BEGIN symbol id=save_config --><a id="save_config"></a>
+
+### `save_config`
+- **Kind:** Function
+- **Signature:** `def save_config(...)`
+- **Docstring:** `No documentation available`
+
+#### What it does
+<!-- ARCHDOC:BEGIN section=purpose -->
+extracted from AST
+<!-- ARCHDOC:END section=purpose -->
+
+#### Relations
+<!-- ARCHDOC:BEGIN section=relations -->
+**Outbound calls (best-effort):**
+
+**Inbound (used by) (best-effort):**
+<!-- ARCHDOC:END section=relations -->
+
+#### Integrations (heuristic)
+<!-- ARCHDOC:BEGIN section=integrations -->
+- HTTP: no
+- DB: no
+- Queue/Tasks: no
+<!-- ARCHDOC:END section=integrations -->
+
+#### Risk / impact
+<!-- ARCHDOC:BEGIN section=impact -->
+- fan-in: 0
+- fan-out: 0
+- cycle participant: no
+- critical: no
+<!-- ARCHDOC:END section=impact -->
+
+<!-- MANUAL:BEGIN -->
+#### Manual notes
+<FILL_MANUALLY>
+<!-- MANUAL:END -->
+<!-- ARCHDOC:END symbol id=save_config -->
+
+<!-- ARCHDOC:BEGIN symbol id=get_file_size --><a id="get_file_size"></a>
+
+### `get_file_size`
+- **Kind:** Function
+- **Signature:** `def get_file_size(...)`
+- **Docstring:** `No documentation available`
+
+#### What it does
+<!-- ARCHDOC:BEGIN section=purpose -->
+extracted from AST
+<!-- ARCHDOC:END section=purpose -->
+
+#### Relations
+<!-- ARCHDOC:BEGIN section=relations -->
+**Outbound calls (best-effort):**
+
+**Inbound (used by) (best-effort):**
+<!-- ARCHDOC:END section=relations -->
+
+#### Integrations (heuristic)
+<!-- ARCHDOC:BEGIN section=integrations -->
+- HTTP: no
+- DB: no
+- Queue/Tasks: no
+<!-- ARCHDOC:END section=integrations -->
+
+#### Risk / impact
+<!-- ARCHDOC:BEGIN section=impact -->
+- fan-in: 0
+- fan-out: 0
+- cycle participant: no
+- critical: no
+<!-- ARCHDOC:END section=impact -->
+
+<!-- MANUAL:BEGIN -->
+#### Manual notes
+<FILL_MANUALLY>
+<!-- MANUAL:END -->
+<!-- ARCHDOC:END symbol id=get_file_size -->
+
+<!-- ARCHDOC:BEGIN symbol id=format_bytes --><a id="format_bytes"></a>
+
+### `format_bytes`
+- **Kind:** Function
+- **Signature:** `def format_bytes(...)`
+- **Docstring:** `No documentation available`
+
+#### What it does
+<!-- ARCHDOC:BEGIN section=purpose -->
+extracted from AST
+<!-- ARCHDOC:END section=purpose -->
+
+#### Relations
+<!-- ARCHDOC:BEGIN section=relations -->
+**Outbound calls (best-effort):**
+
+**Inbound (used by) (best-effort):**
+<!-- ARCHDOC:END section=relations -->
+
+#### Integrations (heuristic)
+<!-- ARCHDOC:BEGIN section=integrations -->
+- HTTP: no
+- DB: no
+- Queue/Tasks: no
+<!-- ARCHDOC:END section=integrations -->
+
+#### Risk / impact
+<!-- ARCHDOC:BEGIN section=impact -->
+- fan-in: 0
+- fan-out: 0
+- cycle participant: no
+- critical: no
+<!-- ARCHDOC:END section=impact -->
+
+<!-- MANUAL:BEGIN -->
+#### Manual notes
+<FILL_MANUALLY>
+<!-- MANUAL:END -->
+<!-- ARCHDOC:END symbol id=format_bytes -->