fix: quote frontmatter descriptions that gained colons in the em-dash pass (unquoted YAML scalars with a second colon broke every page)

Author: ouiliame

apps/docs/content/docs/en/academy/agents/block.mdx

@@ -1,6 +1,6 @@
 ---
 title: The Agent Block
-description: Inside the Agent block, a run becomes a conversation: a message stack the model reads, a swappable brain, and an output bundle every later block can use.
+description: "Inside the Agent block, a run becomes a conversation: a message stack the model reads, a swappable brain, and an output bundle every later block can use."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/agents/intro.mdx

@@ -1,6 +1,6 @@
 ---
 title: Agents
-description: An AI agent is a Sim workflow that uses Agent blocks: the reasoning engine you shape, parameterize, and compose into intelligent processes.
+description: "An AI agent is a Sim workflow that uses Agent blocks: the reasoning engine you shape, parameterize, and compose into intelligent processes."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/agents/memory.mdx

@@ -1,6 +1,6 @@
 ---
 title: Memory
-description: One setting gives an agent memory: a conversation ID under which every turn is kept, so the next run starts from the conversation so far.
+description: "One setting gives an agent memory: a conversation ID under which every turn is kept, so the next run starts from the conversation so far."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/chat/intro.mdx

@@ -1,6 +1,6 @@
 ---
 title: Chat
-description: The chat in Sim is your workspace control plane: one conversation that queries your tables, searches your docs, runs and schedules workflows, researches the outside world, and composes it all into new systems.
+description: "The chat in Sim is your workspace control plane: one conversation that queries your tables, searches your docs, runs and schedules workflows, researches the outside world, and composes it all into new systems."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/workflows/branching.mdx

@@ -1,6 +1,6 @@
 ---
 title: Branching
-description: Split a workflow into different paths based on the result of a step: the Condition block decides with a rule, the Router lets a model decide.
+description: "Split a workflow into different paths based on the result of a step: the Condition block decides with a rule, the Router lets a model decide."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/workflows/deployment.mdx

@@ -1,6 +1,6 @@
 ---
 title: Deployment
-description: Deploying gives a workflow an address so the outside world can run it: the same Start block answers calls as an API, a chat, or an MCP tool.
+description: "Deploying gives a workflow an address so the outside world can run it: the same Start block answers calls as an API, a chat, or an MCP tool."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/workflows/intro.mdx

@@ -1,6 +1,6 @@
 ---
 title: Workflows
-description: A workflow is a visual program made of blocks: where you compose data, operations, integrations, and AI agents into a process.
+description: "A workflow is a visual program made of blocks: where you compose data, operations, integrations, and AI agents into a process."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'

apps/docs/content/docs/en/academy/workflows/loops.mdx

@@ -1,6 +1,6 @@
 ---
 title: Loops & Parallel
-description: Repeat the same steps over a collection: the Loop block runs them one item at a time, the Parallel block runs every item at once.
+description: "Repeat the same steps over a collection: the Loop block runs them one item at a time, the Parallel block runs every item at once."
 ---
 
 import { VideoPlaceholder } from '@/components/ui/video-placeholder'