chore: add typo check to linter

Author: pawbana

.github/workflows/typos.toml

@@ -0,0 +1,15 @@
+[default]
+extend-ignore-re = ["(#|//)\\s*spellchecker:ignore-next-line\\n.*"]
+
+[default.extend-words]
+trialer = "trialer"
+
+[files]
+extend-exclude = [
+	"go.sum",
+	"go.mod",
+	# Fixtures contain truncated streaming chunks that look like typos
+	"fixtures/**",
+	# Test files contain hashes and redacted values that look like typos
+	"**/*_test.go",
+]

Makefile

@@ -17,14 +17,18 @@ SHELL_SRC_FILES := $(shell find . -type f -name '*.sh' -not -path '*/.git/*')
 GOLANGCI_LINT_VERSION ?= 1.64.8
 PARALLELTESTCTX_VERSION ?= 0.0.1
 
-lint: lint/shellcheck lint/go
+lint: lint/shellcheck lint/go lint/typos
 .PHONY: lint
 
 lint/go:
 	go run github.com/golangci/golangci-lint/cmd/golangci-lint@v$(GOLANGCI_LINT_VERSION) run
 	go run github.com/coder/paralleltestctx/cmd/paralleltestctx@v$(PARALLELTESTCTX_VERSION) -custom-funcs="testutil.Context" ./...
 .PHONY: lint/go
 
+lint/typos:
+	typos . --config .github/workflows/typos.toml
+.PHONY: lint/typos
+
 lint/shellcheck:
 	if test -n "$(strip $(SHELL_SRC_FILES))"; then \
 		echo "--- shellcheck"; \

README.md

@@ -118,7 +118,7 @@ See [example/](example/) for a complete runnable example with SQLite persistence
 5. **Test with Claude Code**:
    Claude Code allows a base URL override via `ANTHROPIC_BASE_URL`.
 
-   ![image with cloude code example](example/claude-code.png)
+   ![image with claude code example](example/claude-code.png)
 
 ## Supported Routes
 

intercept/apidump/apidump.go

@@ -153,7 +153,7 @@ func (d *dumper) dumpResponse(resp *http.Response) error {
 // writeRedactedHeaders writes HTTP headers in wire format (Key: Value\r\n) to w,
 // redacting sensitive values and applying any overrides. Headers are sorted by key
 // for deterministic output.
-// `sensitive` and `overrides` must both supply keys in canoncialized form.
+// `sensitive` and `overrides` must both supply keys in canonicalized form.
 // See [textproto.MIMEHeader].
 func (*dumper) writeRedactedHeaders(w io.Writer, headers http.Header, sensitive map[string]struct{}, overrides map[string]string) error {
 	// Collect all header keys including overrides.