refactor: replace em dashes with hyphens in test files and docs

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/context-window-monitor.model-context-limits.test.ts

@@ -173,7 +173,7 @@ describe("context-window-monitor modelContextLimitsCache", () => {
         const output = createOutput()
         await hook["tool.execute.after"]({ tool: "bash", sessionID, callID: "call_1" }, output)
 
-        // then — 160K/500K = 32%, well below 70% threshold
+        // then - 160K/500K = 32%, well below 70% threshold
         expect(output.output).toBe("original")
       })
     })

src/hooks/model-fallback/hook.test.ts

@@ -400,7 +400,7 @@ describe("model fallback hook", () => {
     //#when
     await hook["chat.message"]?.({ sessionID }, output)
 
-    //#then — model name should be transformed from hyphen to dot notation
+    //#then - model name should be transformed from hyphen to dot notation
     expect(output.message["model"]).toEqual({
       providerID: "github-copilot",
       modelID: "claude-sonnet-4.6",

src/hooks/preemptive-compaction.test.ts

@@ -601,7 +601,7 @@ describe("preemptive-compaction", () => {
     })
     const sessionID = "ses_kimi_limit"
 
-    // 180k total tokens — above 78% of 200k (156k) but below 78% of 256k (204k)
+    // 180k total tokens - above 78% of 200k (156k) but below 78% of 256k (204k)
     await hook.event({
       event: {
         type: "message.updated",
@@ -644,7 +644,7 @@ describe("preemptive-compaction", () => {
     })
     const sessionID = "ses_kimi_trigger"
 
-    // 210k total — above 78% of 256k (≈204k)
+    // 210k total - above 78% of 256k (≈204k)
     await hook.event({
       event: {
         type: "message.updated",

src/hooks/runtime-fallback/error-classifier.test.ts

@@ -134,7 +134,7 @@ describe("extractStatusCode", () => {
   })
 
   test("skips non-numeric status and finds deeper numeric statusCode", () => {
-    //#given — status is a string, but error.statusCode is numeric
+    //#given - status is a string, but error.statusCode is numeric
     const error = {
       status: "error",
       error: { statusCode: 429 },