Clarify Gitea workflow and ban AI-style unicode markers

rules/patterns/go-code-style/contract.md

@@ -2,6 +2,13 @@
 
 Version: 1.1
 
+## Source Text and Comments
+
+- Use plain ASCII in source code and comments by default.
+- Do not use em dash, emoji, or other decorative Unicode markers in code, comments, log messages, or user-facing fallback strings unless a feature explicitly requires non-ASCII text.
+- Do not leave AI-style markers in the codebase: ornamental phrasing, assistant-like filler, synthetic enthusiasm, or comments that read like generated prose instead of technical documentation.
+- Comments must be short, concrete, and technical. Explain intent, invariants, or non-obvious constraints; do not write marketing-style or conversational commentary.
+
 ## Logging
 
 See `kit/patterns/go-logging/contract.md` for full rules.
@@ -18,7 +25,7 @@ if err := db.Save(&record).Error; err != nil {
     return fmt.Errorf("save component %s: %w", record.ID, err)
 }
 
-// WRONG — loses context
+// WRONG: loses context
 return err
 ```
 
@@ -35,9 +42,9 @@ return err
 Handlers are thin. Business logic belongs in a service layer.
 
 ```
-Handler   → validates input, calls service, writes response
-Service   → business logic, calls repository
-Repository → SQL queries only, returns domain types
+Handler -> validates input, calls service, writes response
+Service -> business logic, calls repository
+Repository -> SQL queries only, returns domain types
 ```
 
 - Handlers must not contain SQL queries.
@@ -48,7 +55,7 @@ Repository → SQL queries only, returns domain types
 
 ```
 1. Parse flags / load config
-2. Connect to DB — fail fast if unavailable (see go-database contract)
+2. Connect to DB; fail fast if unavailable (see go-database contract)
 3. Run migrations
 4. Initialize services and background workers
 5. Register routes
@@ -69,14 +76,14 @@ Never reverse steps 2 and 5. Never start serving before migrations complete.
 ## Template / UI Rendering
 
 - Server-rendered HTML via Go templates is the default.
-- htmx for partial updates — no full SPA framework unless explicitly decided.
+- htmx for partial updates; no full SPA framework unless explicitly decided.
 - Template errors must return `500` and log the error server-side.
 - Never expose raw Go error messages to the end user in rendered HTML.
 
 ## Business Logic Placement
 
 - Threshold computation, status derivation, and scoring live on the server.
-- The UI only reflects what the server returns — it does not recompute status client-side.
+- The UI only reflects what the server returns; it does not recompute status client-side.
 - Example: "critical / warning / ok" badge color is determined by the handler, not by JS.
 
 ## Dependency Rules