docs: unwrap hard-wrapped Markdown to one line per paragraph

Hard line breaks mid-paragraph make docs harder to edit and diff — a
one-word change reflows and re-diffs the whole paragraph. Reflow all
tracked non-vendor Markdown (plus vendor/AGENTS.md) so each prose
paragraph is a single line; soft-wrapping is the editor's job. Fenced
code, tables, and list structure are preserved (wrapped list items fold
to one line per bullet). Documents the convention in AGENTS.md.

examples/coding-agent/README.md

@@ -1,8 +1,7 @@
 # coding-agent
 
 The first REAL agent wiring: DeepSeek V4 + the bash tool suite + stdio chat
-+ JSONL persistence, loaded from `cordis.yml`. Where echo-agent proves the
-skeleton with mocks, this example is a usable coding assistant.
++ JSONL persistence, loaded from `cordis.yml`. Where echo-agent proves the skeleton with mocks, this example is a usable coding assistant.
 
 ## Run it
 
@@ -13,11 +12,7 @@ skeleton with mocks, this example is a usable coding assistant.
 yarn demo:coding
 ```
 
-Type a coding task. The agent's only tools are `bash` (+ `bash_output` /
-`bash_kill` for background tasks): file reads, writes, searches, and test
-runs all happen through shell commands, each in a fresh `bash -c` (the
-system prompt tells the model to pass `workdir` instead of `cd`). Reasoning
-streams dimmed; tool calls/results render inline.
+Type a coding task. The agent's only tools are `bash` (+ `bash_output` / `bash_kill` for background tasks): file reads, writes, searches, and test runs all happen through shell commands, each in a fresh `bash -c` (the system prompt tells the model to pass `workdir` instead of `cd`). Reasoning streams dimmed; tool calls/results render inline.
 
 ```
 > fix the failing test in /path/to/project
@@ -39,13 +34,7 @@ streams dimmed; tool calls/results render inline.
 
 ## End-to-end tests (`yarn test:e2e`, key-gated)
 
-- `tests/full-loop.e2e.ts` — the canary: real model runs `echo e2e-ok`
-  through the real bash tool; asserts `tool/call`/`tool/result` session
-  events and the final answer.
-- `tests/coding-task.e2e.ts` — the swebench-style smoke: a temp dir holds
-  `add.js` (with `a - b` where `a + b` belongs) and a failing
-  `add.test.js`; the agent must fix the bug and verify. The test re-runs
-  `node add.test.js` ITSELF and inspects the files — agent claims are not
-  trusted.
+- `tests/full-loop.e2e.ts` — the canary: real model runs `echo e2e-ok` through the real bash tool; asserts `tool/call`/`tool/result` session events and the final answer.
+- `tests/coding-task.e2e.ts` — the swebench-style smoke: a temp dir holds `add.js` (with `a - b` where `a + b` belongs) and a failing `add.test.js`; the agent must fix the bug and verify. The test re-runs `node add.test.js` ITSELF and inspects the files — agent claims are not trusted.
 
 Both self-skip without `DEEPSEEK_API_KEY`.

examples/echo-agent/README.md

@@ -5,14 +5,10 @@ Runnable demo: stdin chat with a scripted mock model and an echo tool.
 ## What it shows
 
 - A complete Cordis app loaded from `cordis.yml` — the standard "stack of plugins" pattern
-- `mock-llm.ts` — a mock `LlmAdapter` that streams scripted responses and calls the
-  `echo` tool when the user types "echo <something>"
-- `echo-tool.ts` — a tool registered via `ctx.tools.register()` that echoes text
-  back uppercased
-- `session-jsonl.ts` — a minimal persistence plugin: write-behind buffering of
-  `session/event` notifications, drained to a JSONL file at `session/flush`
-- `stdio-chat.ts` — a minimal UI plugin: reads stdin lines and `send`/`steer`s
-  the agent, renders stream deltas, tool calls, and tool results
+- `mock-llm.ts` — a mock `LlmAdapter` that streams scripted responses and calls the `echo` tool when the user types "echo <something>"
+- `echo-tool.ts` — a tool registered via `ctx.tools.register()` that echoes text back uppercased
+- `session-jsonl.ts` — a minimal persistence plugin: write-behind buffering of `session/event` notifications, drained to a JSONL file at `session/flush`
+- `stdio-chat.ts` — a minimal UI plugin: reads stdin lines and `send`/`steer`s the agent, renders stream deltas, tool calls, and tool results
 
 ## Plugin files
 
@@ -32,9 +28,6 @@ yarn demo
 node --expose-internals --import tsx examples/echo-agent/start.ts
 ```
 
-Type a message and press Enter. "echo <text>" triggers a tool call round-trip
-(the mock model requests the `echo` tool, which echoes the text uppercased,
-and the next model step acknowledges it).
+Type a message and press Enter. "echo <text>" triggers a tool call round-trip (the mock model requests the `echo` tool, which echoes the text uppercased, and the next model step acknowledges it).
 
-The session is persisted to `<session-id>.jsonl` in the `examples/echo-agent/`
-directory. Clean up with: `rm -f examples/echo-agent/*.jsonl`
+The session is persisted to `<session-id>.jsonl` in the `examples/echo-agent/` directory. Clean up with: `rm -f examples/echo-agent/*.jsonl`