docs(templates): fix stale README info in TS templates

Remove incorrect "Fastify-based" description (SDK provides its own
server) and replace hardcoded 0.0.0.0:8080 with accurate port info.

Confidence: high
Scope-risk: narrow

Author: jesseturner21

src/assets/__tests__/__snapshots__/assets.snapshot.test.ts.snap

@@ -5636,7 +5636,7 @@ commands like \`deploy\`, \`dev\`, and \`invoke\` rely on the configuration stor
 ## Agent Root
 
 The main entrypoint to your app is defined in \`main.ts\`. Using the AgentCore SDK \`BedrockAgentCoreApp\`, this file
-defines a Fastify-based HTTP app that streams tokens from your chosen Agent framework SDK.
+defines an HTTP server that streams tokens from your chosen Agent framework SDK.
 
 \`model/load.ts\` instantiates your chosen model provider.
 
@@ -5651,7 +5651,7 @@ defines a Fastify-based HTTP app that streams tokens from your chosen Agent fram
 
 If installation was successful, \`node_modules/\` is already populated with dependencies.
 
-\`agentcore dev\` will start a local server on 0.0.0.0:8080 using \`npx tsx watch main.ts\` for hot reload.
+\`agentcore dev\` will start a local server using \`npx tsx watch main.ts\` for hot reload. The port is logged to the terminal (default \`8080\`).
 
 In a new terminal, you can invoke that server with:
 
@@ -5977,7 +5977,7 @@ defines an HTTP app that streams tokens using the Vercel AI SDK's \`streamText\`
 
 If installation was successful, \`node_modules/\` is already populated with dependencies.
 
-\`agentcore dev\` will start a local server on 0.0.0.0:8080 using \`npx tsx watch main.ts\` for hot reload.
+\`agentcore dev\` will start a local server using \`npx tsx watch main.ts\` for hot reload. The port is logged to the terminal (default \`8080\`).
 
 In a new terminal, you can invoke that server with:
 

src/assets/typescript/http/strands/base/README.md

@@ -9,7 +9,7 @@ commands like `deploy`, `dev`, and `invoke` rely on the configuration stored her
 ## Agent Root
 
 The main entrypoint to your app is defined in `main.ts`. Using the AgentCore SDK `BedrockAgentCoreApp`, this file
-defines a Fastify-based HTTP app that streams tokens from your chosen Agent framework SDK.
+defines an HTTP server that streams tokens from your chosen Agent framework SDK.
 
 `model/load.ts` instantiates your chosen model provider.
 
@@ -24,7 +24,7 @@ defines a Fastify-based HTTP app that streams tokens from your chosen Agent fram
 
 If installation was successful, `node_modules/` is already populated with dependencies.
 
-`agentcore dev` will start a local server on 0.0.0.0:8080 using `npx tsx watch main.ts` for hot reload.
+`agentcore dev` will start a local server using `npx tsx watch main.ts` for hot reload. The port is logged to the terminal (default `8080`).
 
 In a new terminal, you can invoke that server with:
 

src/assets/typescript/http/vercelai/base/README.md

@@ -24,7 +24,7 @@ defines an HTTP app that streams tokens using the Vercel AI SDK's `streamText` A
 
 If installation was successful, `node_modules/` is already populated with dependencies.
 
-`agentcore dev` will start a local server on 0.0.0.0:8080 using `npx tsx watch main.ts` for hot reload.
+`agentcore dev` will start a local server using `npx tsx watch main.ts` for hot reload. The port is logged to the terminal (default `8080`).
 
 In a new terminal, you can invoke that server with: