docs: fix English docs inconsistencies

README.md

@@ -120,7 +120,7 @@ cmake --build build
 
 ```bash
 ry <file.ry>              # Run a Ry script
-echo '<code>' | ry         # Run code from stdin
+echo '<code>' | ry -c      # Run code from stdin
 ry test [options] [path]   # Run tests (*.test.ry)
 ry init                    # Initialize a project in current directory
 ry new <name>              # Create a new project
@@ -134,7 +134,7 @@ The `self-update` command verifies release artifacts using Ed25519 signature ver
 Stdin also supports here-documents:
 
 ```bash
-ry <<'RY'
+ry -c <<'RY'
 a = 1
 b = 2
 print(a + b)

docs/README.md

@@ -47,7 +47,7 @@ For detailed language specifications, see the reference pages below.
 | [Math Functions](reference/math.md) | PI, E, sqrt, sin, cos, abs, floor, ceil, round, etc. |
 | [I/O Functions](reference/io.md) | read_text, write_text, exists, read_bytes, to_bytes, etc. |
 | [JSON](reference/json.md) | parse, stringify, get, at, to_str, to_int, etc. |
-| [Network (TCP)](reference/net.md) | bind, listen, accept, connect, send/recv/close for TCP sockets |
+| [Network (TCP)](reference/net.md) | bind, listen, accept, connect, send/receive/close for TCP sockets |
 | [HTTP Server](reference/http.md) | listen, method, path, header, body, response |
 | [Base64](reference/base64.md) | encode, decode, encode_url_safe, decode_url_safe |
 | [Path](reference/path.md) | join, basename, dirname, extension, resolve, is_absolute |

docs/reference/project.md

@@ -6,7 +6,7 @@
 
 ```bash
 ry <file.ry> [args...]              # Run a Ry script
-echo '<code>' | ry                  # Run code from stdin
+echo '<code>' | ry -c               # Run code from stdin
 ry test [options] [<file> | <dir>]  # Run tests
 ry init                             # Initialize a project
 ry new <project-name>               # Create a new project

docs/tutorial/03-operators.md

@@ -14,7 +14,7 @@
 | `-` | Subtraction | `3 - 2` | `1` |
 | `*` | Multiplication / string repetition | `3 * 2` | `6` |
 | `/` | Division (always float) | `7 / 2` | `3.5` |
-| `//` | Floor division (int for int operands, float if either is float) | `7 // 2` | `3` |
+| `//` | Floor division (always int) | `7 // 2` | `3` |
 | `%` | Modulo | `7 % 3` | `1` |
 | `**` | Exponentiation (always float) | `2 ** 10` | `1024` |
 
@@ -28,7 +28,7 @@ print(a * b)    # 30
 print(a / b)    # 3.3333... (float)
 print(a // b)   # 3 (int)
 print(a % b)    # 1
-print(2 ** 8)   # 256 (float)
+print(2 ** 8)   # 256
 ```
 
 > **Overflow safety:** Arithmetic on `int` (`+`, `-`, `*`, unary `-`) raises a runtime error if the result overflows the 64-bit signed range. Constant expressions that overflow are caught at compile time. Low-level types (`i32`, `u8`, etc.) wrap silently — use `checked_add`/`saturating_add`/`wrapping_add` for explicit overflow control.
@@ -184,8 +184,8 @@ print(4 / 2)      # 2 (float)
 print(7 // 2)     # 3 (int)
 print(7.0 // 2)   # 3 (int)
 
-# ** always produces float
-print(2 ** 3)     # 8 (float)
+# ** produces int for int operands
+print(2 ** 3)     # 8
 
 # % produces int if both operands are int, float if either is float
 print(7 % 3)      # 1 (int)