feat: implement custom prompt functionality in PHP backend

feat: add custom prompt input with Send button to LLM toolbar

docs: update documentation for Insert Template feature and metadata usage

fix: resolve JavaScript error when inserting template by updating action handling and response parsing

feat: add template insertion button to LLM toolbar when metadata template is defined

feat: include full template and example page content in LLM context

refactor: remove redundant DokuWiki syntax instruction from system prompt

docs: anonymize example report ID in README.md

docs: update README with analyze/continue features and metadata support

feat: add metadata support for LLM template and example pages

feat: add DokuWiki syntax support to system prompts

feat: make textarea readonly during processing to prevent user input

feat: add analyze and continue actions to dokullm plugin

refactor: enhance prompt templates for improved text processing and medical report writing

feat: add analyzeText and continueText methods to llm_client.php

feat: remove translate button and related functionality

feat: add analyze and continue action prompt buttons

feat: add language configuration option for prompts

feat: add Romanian translation prompts subfolder with translated txt files

feat: add system prompt for consistent LLM behavior across requests

feat: add individual prompt files and loader method for dokullm plugin

style: remove custom colors from JavaScript CSS to use theme defaults

Co-authored-by: aider (openrouter/qwen/qwen3-coder:free) <aider@aider.chat>

fix: rename prompt variable to avoid conflict with global prompt function

Co-authored-by: aider (openrouter/qwen/qwen3-coder:free) <aider@aider.chat>

refactor: rename plugin from doku_llm to dokullm

refactor: rename doku_llm to dokullm throughout the codebase

Co-authored-by: aider (openrouter/qwen/qwen3-coder:free) <aider@aider.chat>