Add harmony prompt template

Related to #1

AGENTS.md

@@ -10,7 +10,7 @@ This file provides guidelines for codex agents contributing to the Sortana proje
 - `options/`: The options page HTML, JavaScript and bundled Bulma CSS (v1.0.3).
 - `details.html` and `details.js`: View AI reasoning and clear cache for a message.
 - `resources/`: Images and other static files.
-- `prompt_templates/`: Prompt template files for the AI service.
+- `prompt_templates/`: Prompt template files for the AI service (openai, qwen, mistral, harmony).
 - `build-xpi.ps1`: PowerShell script to package the extension.
 - `build-xpi.sh`: Bash script to package the extension.
 

README.md

@@ -14,7 +14,7 @@ expecting a `match` (or `matched`) boolean plus a `reason` string.
 ## Features
 
 - **Configurable endpoint** – set the classification service base URL on the options page.
-- **Prompt templates** – choose between several model formats or provide your own custom template.
+- **Prompt templates** – choose between OpenAI/ChatML, Qwen, Mistral, Harmony (gpt-oss), or provide your own custom template.
 - **Custom system prompts** – tailor the instructions sent to the model for more precise results.
 - **Persistent result caching** – classification results and reasoning are saved to disk so messages aren't re-evaluated across restarts.
 - **Advanced parameters** – tune generation settings like temperature, top‑p and more from the options page.

_locales/en-US/messages.json

@@ -12,6 +12,7 @@
   "template.openai": { "message": "OpenAI / ChatML" },
   "template.qwen": { "message": "Qwen" },
   "template.mistral": { "message": "Mistral" },
+  "template.harmony": { "message": "Harmony (gpt-oss)" },
   "template.custom": { "message": "Custom" },
   "options.save": { "message": "Save" },
   "options.debugLogging": { "message": "Enable debug logging" },

ai-filter.sln

@@ -44,6 +44,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "prompt_templates", "prompt_
 		prompt_templates\mistral.txt = prompt_templates\mistral.txt
 		prompt_templates\openai.txt = prompt_templates\openai.txt
 		prompt_templates\qwen.txt = prompt_templates\qwen.txt
+		prompt_templates\harmony.txt = prompt_templates\harmony.txt
 	EndProjectSection
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "resources", "resources", "{68A87938-5C2B-49F5-8AAA-8A34FBBFD854}"

options/options.js

@@ -104,6 +104,7 @@ document.addEventListener('DOMContentLoaded', async () => {
         openai: browser.i18n.getMessage('template.openai'),
         qwen: browser.i18n.getMessage('template.qwen'),
         mistral: browser.i18n.getMessage('template.mistral'),
+        harmony: browser.i18n.getMessage('template.harmony'),
         custom: browser.i18n.getMessage('template.custom')
     };
     const templateSelect = document.getElementById('template');

prompt_templates/harmony.txt

@@ -0,0 +1,21 @@
+<|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
+Knowledge cutoff: 2024-06
+Current date: 2025-06-28
+
+Reasoning: medium
+
+# Valid channels: analysis, commentary, final. Channel must be included for every message.<|end|>
+<|start|>developer<|message|># Instructions
+
+{{system}}<|end|>
+<|start|>user<|message|>**Email Contents**
+```
+{{email}}
+```
+Classification Criterion: {{query}}
+Remember, return ONLY a JSON object on a single line of the form:
+{"match": true, "reason": "<short explanation>"} - if the email satisfies the criterion
+{"match": false, "reason": "<short explanation>"} - otherwise
+
+Do not add any other keys, text, or formatting.<|end|>
+<|start|>assistant