{"type":"tool.execution_complete","timestamp":"2026-08-04T18:16:03.562Z","data":{"toolName":"bash","mcpServerName":"","success":true,"result":{"content":"// Package largefunc implements a Go analysis linter that flags functions\n// whose body exceeds a configurable line threshold.\npackage largefunc\n\nimport (\n\t\"go/ast\"\n\n\t\"golang.org/x/tools/go/analysis\"\n\t\"golang.org/x/tools/go/analysis/passes/inspect\"\n\n\t\"github.com/github/gh-aw/pkg/linters/internal/astutil\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/filecheck\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/nolint\"\n\t\"github.com/github/gh-aw/pkg/logger\"\n)\n\nvar pkgLog = logger.New(\"linters:largefunc\")\n\n// DefaultMaxLines is the default maximum number of lines allowed in a function body.\nconst DefaultMaxLines = 60\n\n// Analyzer is the large-function analysis pass.\nvar Analyzer = &analysis.Analyzer{\n\tName: \"largefunc\",\n\tDoc: \"reports functions whose body exceeds the line limit (default 60 lines)\",\n\tURL: \"https://github.com/github/gh-aw/tree/main/pkg/linters/largefunc\",\n\tRequires: []*analysis.Analyzer{inspect.Analyzer, nolint.Analyzer, filecheck.Analyzer},\n\tRun: run,\n}\n\n// maxLines is the configurable threshold. It is set via the -largefunc.max-lines flag.\nvar maxLines int\n\nfunc init() {\n\tAnalyzer.Flags.IntVar(&maxLines, \"max-lines\", DefaultMaxLines,\n\t\t\"maximum number of lines permitted in a function body\")\n}\n\nfunc run(pass *analysis.Pass) (any, error) {\n\tpkgLog.Printf(\"analyzing package %s (max-lines=%d)\", pass.Pkg.Path(), maxLines)\n\n\tinsp, err := astutil.Inspector(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tnoLintIndex, err := nolint.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tgeneratedFiles, err := filecheck.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tnodeFilter := []ast.Node{(*ast.FuncDecl)(nil), (*ast.FuncLit)(nil)}\n\tinsp.Preorder(nodeFilter, func(n ast.Node) {\n\t\tcheckFuncBodyLength(pass, n, generatedFiles, noLintIndex)\n\t})\n\treturn nil, nil\n}\n\n// checkFuncBodyLength reports a diagnostic when the body of a function\n// declaration or literal exceeds maxLines.\nfunc checkFuncBodyLength(pass *analysis.Pass, n ast.Node, generatedFiles filecheck.GeneratedIndex, noLintIndex nolint.DirectiveIndex) {\n\tvar body *ast.BlockStmt\n\tvar name string\n\tvar reportNode ast.Node\n\n\tswitch fn := n.(type) {\n\tcase *ast.FuncDecl:\n\t\tbody = fn.Body\n\t\tname = fn.Name.Name\n\t\treportNode = fn.Name\n\tcase *ast.FuncLit:\n\t\tbody = fn.Body\n\t\tname = \"func literal\"\n\t\treportNode = body\n\t}\n\n\tif body == nil {\n\t\treturn\n\t}\n\n\tposition := pass.Fset.PositionFor(reportNode.Pos(), false)\n\tif filecheck.ShouldSkipFilename(position.Filename, generatedFiles) {\n\t\treturn\n\t}\n\n\tstart := pass.Fset.Position(body.Lbrace)\n\tend := pass.Fset.Position(body.Rbrace)\n\tlines := end.Line - start.Line - 1 // subtract 1: exclude the closing brace line, count only body lines\n\n\tif lines > maxLines {\n\t\tif nolint.HasDirectiveForLinter(position, noLintIndex, \"largefunc\") {\n\t\t\treturn\n\t\t}\n\t\tpkgLog.Printf(\"flagging %s: %d lines exceeds limit %d\", name, lines, maxLines)\n\t\tpass.ReportRangef(\n\t\t\treportNode,\n\t\t\t\"%s is %d lines long (limit: %d); consider breaking it up\",\n\t\t\tname, lines, maxLines,\n\t\t)\n\t}\n}\n<shellId: 44 completed with exit code 0>","detailedContent":"// Package largefunc implements a Go analysis linter that flags functions\n// whose body exceeds a configurable line threshold.\npackage largefunc\n\nimport (\n\t\"go/ast\"\n\n\t\"golang.org/x/tools/go/analysis\"\n\t\"golang.org/x/tools/go/analysis/passes/inspect\"\n\n\t\"github.com/github/gh-aw/pkg/linters/internal/astutil\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/filecheck\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/nolint\"\n\t\"github.com/github/gh-aw/pkg/logger\"\n)\n\nvar pkgLog = logger.New(\"linters:largefunc\")\n\n// DefaultMaxLines is the default maximum number of lines allowed in a function body.\nconst DefaultMaxLines = 60\n\n// Analyzer is the large-function analysis pass.\nvar Analyzer = &analysis.Analyzer{\n\tName: \"largefunc\",\n\tDoc: \"reports functions whose body exceeds the line limit (default 60 lines)\",\n\tURL: \"https://github.com/github/gh-aw/tree/main/pkg/linters/largefunc\",\n\tRequires: []*analysis.Analyzer{inspect.Analyzer, nolint.Analyzer, filecheck.Analyzer},\n\tRun: run,\n}\n\n// maxLines is the configurable threshold. It is set via the -largefunc.max-lines flag.\nvar maxLines int\n\nfunc init() {\n\tAnalyzer.Flags.IntVar(&maxLines, \"max-lines\", DefaultMaxLines,\n\t\t\"maximum number of lines permitted in a function body\")\n}\n\nfunc run(pass *analysis.Pass) (any, error) {\n\tpkgLog.Printf(\"analyzing package %s (max-lines=%d)\", pass.Pkg.Path(), maxLines)\n\n\tinsp, err := astutil.Inspector(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tnoLintIndex, err := nolint.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tgeneratedFiles, err := filecheck.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tnodeFilter := []ast.Node{(*ast.FuncDecl)(nil), (*ast.FuncLit)(nil)}\n\tinsp.Preorder(nodeFilter, func(n ast.Node) {\n\t\tcheckFuncBodyLength(pass, n, generatedFiles, noLintIndex)\n\t})\n\treturn nil, nil\n}\n\n// checkFuncBodyLength reports a diagnostic when the body of a function\n// declaration or literal exceeds maxLines.\nfunc checkFuncBodyLength(pass *analysis.Pass, n ast.Node, generatedFiles filecheck.GeneratedIndex, noLintIndex nolint.DirectiveIndex) {\n\tvar body *ast.BlockStmt\n\tvar name string\n\tvar reportNode ast.Node\n\n\tswitch fn := n.(type) {\n\tcase *ast.FuncDecl:\n\t\tbody = fn.Body\n\t\tname = fn.Name.Name\n\t\treportNode = fn.Name\n\tcase *ast.FuncLit:\n\t\tbody = fn.Body\n\t\tname = \"func literal\"\n\t\treportNode = body\n\t}\n\n\tif body == nil {\n\t\treturn\n\t}\n\n\tposition := pass.Fset.PositionFor(reportNode.Pos(), false)\n\tif filecheck.ShouldSkipFilename(position.Filename, generatedFiles) {\n\t\treturn\n\t}\n\n\tstart := pass.Fset.Position(body.Lbrace)\n\tend := pass.Fset.Position(body.Rbrace)\n\tlines := end.Line - start.Line - 1 // subtract 1: exclude the closing brace line, count only body lines\n\n\tif lines > maxLines {\n\t\tif nolint.HasDirectiveForLinter(position, noLintIndex, \"largefunc\") {\n\t\t\treturn\n\t\t}\n\t\tpkgLog.Printf(\"flagging %s: %d lines exceeds limit %d\", name, lines, maxLines)\n\t\tpass.ReportRangef(\n\t\t\treportNode,\n\t\t\t\"%s is %d lines long (limit: %d); consider breaking it up\",\n\t\t\tname, lines, maxLines,\n\t\t)\n\t}\n}\n<shellId: 44 completed with exit code 0>"}}}
{"type":"assistant.message","timestamp":"2026-08-04T18:16:07.465Z","data":{"content":"Also let's look at a simpler string-pattern one similar to what I need (concatenation of literal \"/\")."}}
{"type":"tool.execution_start","timestamp":"2026-08-04T18:16:07.467Z","data":{"toolName":"bash","mcpServerName":"","command":"cd /home/runner/work/gh-aw/gh-aw && cat pkg/linters/stringsconcatloop/stringsconcatloop.go 2>/dev/null | head -100\necho ---MAIN---\ngrep -n \"largefunc\\|Analyzer\" cmd/linters/main.go | head -30"}}
{"type":"tool.execution_complete","timestamp":"2026-08-04T18:16:07.540Z","data":{"toolName":"bash","mcpServerName":"","success":true,"result":{"content":"// Package stringsconcatloop implements a Go analysis linter that flags\n// string concatenation inside for/range loop bodies using += or the equivalent\n// x = x + y form, which allocates a new string on every iteration and can lead\n// to O(n²) total allocated bytes. The idiomatic fix is to use strings.Builder.\npackage stringsconcatloop\n\nimport (\n\t\"go/ast\"\n\t\"go/token\"\n\n\t\"golang.org/x/tools/go/analysis\"\n\t\"golang.org/x/tools/go/analysis/passes/inspect\"\n\t\"golang.org/x/tools/go/ast/inspector\"\n\n\t\"github.com/github/gh-aw/pkg/linters/internal/astutil\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/filecheck\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/nolint\"\n\t\"github.com/github/gh-aw/pkg/logger\"\n)\n\nvar pkgLog = logger.New(\"linters:stringsconcatloop\")\n\n// Analyzer is the string-concat-in-loop analysis pass.\nvar Analyzer = &analysis.Analyzer{\n\tName: \"stringsconcatloop\",\n\tDoc: \"reports string concatenation (+= or x = x + y) inside for/range loops that should use strings.Builder\",\n\tURL: \"https://github.com/github/gh-aw/tree/main/pkg/linters/stringsconcatloop\",\n\tRequires: []*analysis.Analyzer{inspect.Analyzer, nolint.Analyzer, filecheck.Analyzer},\n\tRun: run,\n}\n\n// concatLoopMatch holds the components of a string-concatenation-in-loop\n// assignment identified by collectConcatLoopAssignment.\ntype concatLoopMatch struct {\n\tassign *ast.AssignStmt\n\tlhsExpr ast.Expr\n\tloopNode ast.Node\n\tpos token.Position\n}\n\nfunc run(pass *analysis.Pass) (any, error) {\n\tpkgLog.Printf(\"analyzing package %s\", pass.Pkg.Path())\n\troot, err := astutil.Root(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tnoLintIndex, err := nolint.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tgeneratedFiles, err := filecheck.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tfor cur := range root.Preorder((*ast.AssignStmt)(nil)) {\n\t\tm, ok := collectConcatLoopAssignment(pass, cur, noLintIndex, generatedFiles)\n\t\tif !ok {\n\t\t\tcontinue\n\t\t}\n\t\tif !shouldReportLoopConcat(pass, m.loopNode, m.lhsExpr) {\n\t\t\tcontinue\n\t\t}\n\t\tpkgLog.Printf(\"flagging string concatenation in loop at %s\", m.pos)\n\t\tpass.ReportRangef(m.assign, \"string concatenation inside a loop allocates O(n) strings and O(n²) total bytes; use strings.Builder instead\")\n\t}\n\n\treturn nil, nil\n}\n\nfunc collectConcatLoopAssignment(\n\tpass *analysis.Pass,\n\tcur inspector.Cursor,\n\tnoLintIndex nolint.DirectiveIndex,\n\tgeneratedFiles filecheck.GeneratedIndex,\n) (*concatLoopMatch, bool) {\n\tassign, ok := cur.Node().(*ast.AssignStmt)\n\tif !ok {\n\t\treturn nil, false\n\t}\n\tlhsExpr, ok := concatAssignmentLHS(assign)\n\tif !ok {\n\t\treturn nil, false\n\t}\n\tpos := pass.Fset.PositionFor(assign.Pos(), false)\n\tif filecheck.ShouldSkipFilename(pos.Filename, generatedFiles) {\n\t\treturn nil, false\n\t}\n\tloopPos, loopNode, inLoop := enclosingLoop(pass, cur)\n\tif !inLoop {\n\t\treturn nil, false\n\t}\n\tif nolint.HasDirectiveForLinter(pos, noLintIndex, \"stringsconcatloop\") || nolint.HasDirectiveForLinter(loopPos, noLintIndex, \"stringsconcatloop\") {\n\t\treturn nil, false\n\t}\n\treturn &concatLoopMatch{assign: assign, lhsExpr: lhsExpr, loopNode: loopNode, pos: pos}, true\n}\n\nfunc concatAssignmentLHS(assign *ast.AssignStmt) (ast.Expr, bool) {\n\tswitch assign.Tok {\n---MAIN---\n13://\tlinters -largefunc.max-lines=80 ./...\n<shellId: 45 completed with exit code 0>","detailedContent":"// Package stringsconcatloop implements a Go analysis linter that flags\n// string concatenation inside for/range loop bodies using += or the equivalent\n// x = x + y form, which allocates a new string on every iteration and can lead\n// to O(n²) total allocated bytes. The idiomatic fix is to use strings.Builder.\npackage stringsconcatloop\n\nimport (\n\t\"go/ast\"\n\t\"go/token\"\n\n\t\"golang.org/x/tools/go/analysis\"\n\t\"golang.org/x/tools/go/analysis/passes/inspect\"\n\t\"golang.org/x/tools/go/ast/inspector\"\n\n\t\"github.com/github/gh-aw/pkg/linters/internal/astutil\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/filecheck\"\n\t\"github.com/github/gh-aw/pkg/linters/internal/nolint\"\n\t\"github.com/github/gh-aw/pkg/logger\"\n)\n\nvar pkgLog = logger.New(\"linters:stringsconcatloop\")\n\n// Analyzer is the string-concat-in-loop analysis pass.\nvar Analyzer = &analysis.Analyzer{\n\tName: \"stringsconcatloop\",\n\tDoc: \"reports string concatenation (+= or x = x + y) inside for/range loops that should use strings.Builder\",\n\tURL: \"https://github.com/github/gh-aw/tree/main/pkg/linters/stringsconcatloop\",\n\tRequires: []*analysis.Analyzer{inspect.Analyzer, nolint.Analyzer, filecheck.Analyzer},\n\tRun: run,\n}\n\n// concatLoopMatch holds the components of a string-concatenation-in-loop\n// assignment identified by collectConcatLoopAssignment.\ntype concatLoopMatch struct {\n\tassign *ast.AssignStmt\n\tlhsExpr ast.Expr\n\tloopNode ast.Node\n\tpos token.Position\n}\n\nfunc run(pass *analysis.Pass) (any, error) {\n\tpkgLog.Printf(\"analyzing package %s\", pass.Pkg.Path())\n\troot, err := astutil.Root(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tnoLintIndex, err := nolint.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\tgeneratedFiles, err := filecheck.Index(pass)\n\tif err != nil {\n\t\treturn nil, err\n\t}\n\n\tfor cur := range root.Preorder((*ast.AssignStmt)(nil)) {\n\t\tm, ok := collectConcatLoopAssignment(pass, cur, noLintIndex, generatedFiles)\n\t\tif !ok {\n\t\t\tcontinue\n\t\t}\n\t\tif !shouldReportLoopConcat(pass, m.loopNode, m.lhsExpr) {\n\t\t\tcontinue\n\t\t}\n\t\tpkgLog.Printf(\"flagging string concatenation in loop at %s\", m.pos)\n\t\tpass.ReportRangef(m.assign, \"string concatenation inside a loop allocates O(n) strings and O(n²) total bytes; use strings.Builder instead\")\n\t}\n\n\treturn nil, nil\n}\n\nfunc collectConcatLoopAssignment(\n\tpass *analysis.Pass,\n\tcur inspector.Cursor,\n\tnoLintIndex nolint.DirectiveIndex,\n\tgeneratedFiles filecheck.GeneratedIndex,\n) (*concatLoopMatch, bool) {\n\tassign, ok := cur.Node().(*ast.AssignStmt)\n\tif !ok {\n\t\treturn nil, false\n\t}\n\tlhsExpr, ok := concatAssignmentLHS(assign)\n\tif !ok {\n\t\treturn nil, false\n\t}\n\tpos := pass.Fset.PositionFor(assign.Pos(), false)\n\tif filecheck.ShouldSkipFilename(pos.Filename, generatedFiles) {\n\t\treturn nil, false\n\t}\n\tloopPos, loopNode, inLoop := enclosingLoop(pass, cur)\n\tif !inLoop {\n\t\treturn nil, false\n\t}\n\tif nolint.HasDirectiveForLinter(pos, noLintIndex, \"stringsconcatloop\") || nolint.HasDirectiveForLinter(loopPos, noLintIndex, \"stringsconcatloop\") {\n\t\treturn nil, false\n\t}\n\treturn &concatLoopMatch{assign: assign, lhsExpr: lhsExpr, loopNode: loopNode, pos: pos}, true\n}\n\nfunc concatAssignmentLHS(assign *ast.AssignStmt) (ast.Expr, bool) {\n\tswitch assign.Tok {\n---MAIN---\n13://\tlinters -largefunc.max-lines=80 ./...\n<shellId: 45 completed with exit code 0>"}}}
{"type":"assistant.message","timestamp":"2026-08-04T18:16:40.474Z","data":{"content":"I have enough context. Now let's launch the linter-writer sub-agent to implement `pathconcatslash` with full spec detail."}}
{"type":"tool.execution_start","timestamp":"2026-08-04T18:16:40.475Z","data":{"toolName":"task","mcpServerName":""}}
{"type":"subagent.started","timestamp":"2026-08-04T18:16:40.494Z","data":{"agentName":"general-purpose","agentDisplayName":"General Purpose Agent","toolCallId":"toolu_01GJVZtTUww268PcLbgWE9pP"}}
{"type":"tool.execution_complete","timestamp":"2026-08-04T18:16:40.514Z","data":{"toolName":"task","mcpServerName":"","success":true,"result":{"content":"Agent started in background with agent_id: linter-writer-2. You'll be notified when it completes. Tell the user you're waiting and end your response, or continue unrelated work until notified. The agent supports multi-turn conversations — use write_agent to send follow-up messages.","detailedContent":"Prompt to general-purpose agent (linter-writer-2):\nYou are implementing a new custom Go static analysis linter in the repository at /home/runner/work/gh-aw/gh-aw (Go module: github.com/github/gh-aw).\n\n## Linter to implement\n- Kebab-case name: `path-concat-slash`\n- Package/Analyzer name (hyphens removed): `pathconcatslash`\n- One-sentence Doc (must start with \"reports\"): \"reports manual string concatenation of path or URL segments using a literal \\\"/\\\" instead of filepath.Join or path.Join\"\n- Description: Flags binary expressions of the form `a + \"/\" + b` (or `a + \"/\"`, or `\"/\" + b`) where at least one operand is a string, since this pattern for building filesystem paths or URL segments should instead use `path.Join`/`filepath.Join` (or manual string building via strings.Builder / fmt.Sprintf if intentional, but the \"/\" literal concatenation is the anti-pattern to flag). This can produce incorrect separators, double slashes, or platform-inconsistent paths.\n\n## Evidence found in codebase (recurring pattern, for reference/tests only — do not modify these files)\n- pkg/gitutil/gitutil.go: `parts[0] + \"/\" + parts[1]`\n- pkg/cli/logs_download_artifacts.go: `hostname + \"/\" + owner + \"/\" + repo`\n- pkg/cli/includes.go: `baseDir + \"/\" + filePath`\n\n## Required file layout (exactly mirror the conventions of pkg/linters/largefunc/largefunc.go and pkg/linters/stringsconcatloop/stringsconcatloop.go — read both files first for the exact conventions used: package doc comment, `pkgLog = logger.New(\"linters:pathconcatslash\")`, `Analyzer` var with Name/Doc/URL/Requires/Run fields, use of `astutil`, `filecheck`, `nolint` internal helper packages, `pass.ReportRangef` for diagnostics)\n\n1. Create `pkg/linters/pathconcatslash/pathconcatslash.go`:\n - Package doc comment describing the linter.\n - `Analyzer` variable:\n - `Name: \"pathconcatslash\"`\n - `Doc: \"reports manual string concatenation of path or URL segments using a literal \\\"/\\\" instead of filepath.Join or path.Join\"`\n - `URL: \"https://github.com/github/gh-aw/tree/main/pkg/linters/pathconcatslash\"`\n - `Requires: []*analysis.Analyzer{inspect.Analyzer, nolint.Analyzer, filecheck.Analyzer}` (use whichever of astutil.Inspector or astutil.Root matches the traversal style you choose — inspector for ast.Node filter based traversal like largefunc, or root.Preorder like stringsconcatloop; pick whichever is simplest for BinaryExpr traversal)\n - Detection logic: walk `*ast.BinaryExpr` nodes with `Op == token.ADD`. Detect the pattern where a `+` expression chain includes a string literal exactly equal to `\"/\"` as one of the operands (either directly, e.g. `x + \"/\"` or `\"/\" + y`, or as part of a longer chain like `a + \"/\" + b` which parses as `(a + \"/\") + b` — you need to handle nested BinaryExpr chains). To avoid false positives:\n - Only flag when the top-level expression is not itself part of a larger BinaryExpr chain already reported (report once per outer-most chain, not once per nested sub-expr) — i.e. skip reporting if the parent node is also a `+`-chain BinaryExpr (avoid duplicate diagnostics on nested chains). You can do this by checking during traversal: only report at the outermost `*ast.BinaryExpr` of a chain (i.e., skip if `cur.Parent()` is itself a `token.ADD` BinaryExpr) — mirror how stringsconcatloop or similar handles similar nested traversal deduplication if applicable, or just track visited node identity via a `map[ast.Expr]bool` \"already part of reported chain\" to prevent double-reporting.\n - Do NOT flag chains where the `\"/\"` literal is being used just as a single separator between exactly 2 numeric-looking format tokens like dates (there's no strong signal to detect that reliably, so simplicial: just require the literal string is exactly `\"/\"` and skip further heuristic exclusions — keep it simple, since the linter targets any raw \"/\" concatenation).\n - Skip files where `filecheck.ShouldSkipFilename` returns true (generated files).\n - Respect `nolint.HasDirectiveForLinter(pos, noLintIndex, \"pathconcatslash\")` directives.\n - Report via `pass.ReportRangef(node, \"string concatenation with literal \\\"/\\\" for path/URL building is error-prone; use filepath.Join or path.Join instead\")`.\n - Keep functions small (mirror the helper-function decomposition style of stringsconcatloop.go, e.g. separate a helper function like `isSlashLiteral(e ast.Expr) bool` and `chainContainsSlashLiteral(be *ast.BinaryExpr) bool`).\n\n2. Create test file `pkg/linters/pathconcatslash/pathconcatslash_test.go` using `golang.org/x/tools/go/analysis/analysistest` — mirror the exact test structure of `pkg/linters/stringsconcatloop/stringsconcatloop_test.go` or `pkg/linters/largefunc/largefunc_test.go` (read one of these first). It should call `analysistest.Run(t, analysistest.TestData(), Analyzer, \"pathconcatslash\")`.\n\n3. Create fixture package `pkg/linters/pathconcatslash/testdata/src/pathconcatslash/pathconcatslash.go` with:\n - At least 2-3 positive cases that should be flagged, each annotated with a `// want \"...\"` comment matching the exact diagnostic message regex (partial regex match is fine per analysistest conventions — check an existing fixture file's `// want` comment format first, e.g. in stringsconcatloop testdata, to get the regex escaping right).\n - At least 1-2 negative cases that should NOT be flagged, e.g. using `filepath.Join`/`path.Join` correctly, or `+` concatenation of two variables without any `/` literal, or a `//nolint:pathconcatslash` directive suppressing an otherwise-flagged case (check how nolint directives are tested in an existing fixture, e.g. look for `//nolint:` usage in an existing testdata file like largefunc's or stringsconcatloop's fixture).\n - Use a package name matching the directory (`package pathconcatslash`).\n\n4. Register in `cmd/linters/main.go`: find where other analyzers are imported and added to the multichecker list (grep for \"largefunc\" and \"stringsconcatloop\" imports in that file) and add the import `\"github.com/github/gh-aw/pkg/linters/pathconcatslash\"` plus add `pathconcatslash.Analyzer` to the analyzer list, following the exact same alphabetical/grouping convention already used in that file.\n\n## Verification steps (MUST all pass before you finish)\n1. `cd /home/runner/work/gh-aw/gh-aw && go build ./pkg/linters/pathconcatslash/... ./cmd/linters/...`\n2. `go test ./pkg/linters/pathconcatslash/... -v`\n3. `go vet ./pkg/linters/pathconcatslash/...`\n4. `gofmt -l pkg/linters/pathconcatslash/ cmd/linters/main.go` (should print nothing; if it prints a file, run `gofmt -w` on it)\n5. Run `go build ./cmd/linters` then optionally `./linters ./pkg/linters/pathconcatslash/... 2>&1 | head -20` to sanity check the built binary doesn't crash (clean up the built `linters` binary afterward with `rm -f linters` if created in repo root).\n\nIf compilation or tests fail, fix and retry. You get up to 2 fix attempts; if it still fails after that, stop and report the exact error clearly instead of continuing to iterate indefinitely — but genuinely try to make it compile/pass since this is the core deliverable.\n\n## Constraints\n- Only create/modify: `pkg/linters/pathconcatslash/**` (new files) and `cmd/linters/main.go` (registration only, minimal diff).\n- Do NOT modify any other existing linter package.\n- Do NOT run `make agent-report-progress` or `make test-unit` — this task only needs the targeted build/test/vet commands above.\n- Do NOT create a git branch, do NOT commit anything — the calling process will handle git operations. Just leave the files in the working directory.\n\nWhen done, report back: a short summary of what was created, and paste the final `go test ./pkg/linters/pathconcatslash/... -v` output showing PASS."}}}
[copilot-sdk-driver] [sdk-driver] error: Execution failed: Error: No model available. Check policy enablement under GitHub Settings > Copilot
{"type":"subagent.completed","timestamp":"2026-08-04T18:16:40.569Z","data":{"agentName":"general-purpose","toolCallId":"toolu_01GJVZtTUww268PcLbgWE9pP"}}
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