push (blank)

.clang-format

@@ -0,0 +1,7 @@
+# Clean C formatting: LLVM base, 4-space indent, 100 columns.
+# Run `clang-format -i src/*.c include/*.h` before submitting.
+# Reference: https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+BasedOnStyle: LLVM
+IndentWidth: 4
+ColumnLimit: 100
+UseTab: Never

.forgejo/workflows/grade.yml

@@ -0,0 +1,34 @@
+name: grade
+on: [push]
+
+# Production wiring (gitea-runner on ghost, docker mode):
+#   - job container = gitea/runner-images (has docker CLI) + the host docker
+#     socket, so docker_grade.sh drives the host daemon exactly as designed
+#   - hidden tests mount from the runner host (/opt/grade-hidden) — never in
+#     this repo
+#   - GRADE_HMAC_SECRET mounts from /opt/grade/grade.env on the runner host
+jobs:
+  grade:
+    runs-on: ubuntu-latest
+    container:
+      image: gitea/runner-images:ubuntu-22.04
+      options: >-
+        -v /var/run/docker.sock:/var/run/docker.sock
+        -v /opt/grade/grade.env:/run/secrets/grade.env:ro
+        -v /opt/grade-hidden:/opt/grade-hidden:ro
+    steps:
+      - uses: actions/checkout@v4
+      - name: Grade (blank fails, solved passes)
+        run: |
+          set -a; . /run/secrets/grade.env; set +a
+          docker run --rm --network=none \
+            -v "$PWD":/work \
+            -v /opt/grade-hidden/cs2060/record-manager:/hidden:ro \
+            -e GRADE_HMAC_SECRET \
+            grade-c:dev \
+            python3 /opt/grade/grade_cli.py run \
+              --student /work --hidden /hidden \
+              --course CS2060 --assignment record-manager \
+              --out /work/results.json
+          echo "--- signed result summary ---"
+          head -c 400 results.json

.gitignore

@@ -0,0 +1,3 @@
+build/
+*.o
+*.d

AGENTS.md

@@ -0,0 +1,46 @@
+# AGENTS.md — Record Manager (student repo)
+
+This file is read by **any coding agent** the student uses. Follow it exactly.
+
+## Task
+
+Extend this starter into the course's cumulative **Record Manager** project,
+one milestone at a time. You are helping the student implement the **common
+interface** exactly as specified in the assignment README — do not rename,
+reorder, or remove any function signature; the autograder calls them by name.
+
+## Verification-first (non-negotiable)
+
+1. Before every push: `make` and `make test` must pass.
+2. Milestone 5: `make sanitize` (ASan/UBSan) and `make valgrind` must be clean
+   (`0 bytes lost`, `0 errors`).
+3. The **CI report on Forgejo is the official gate** — a green public test is
+   not enough; the hidden suite decides. If the student cannot see the hidden
+   tests, do not guess what they check — follow the interface contract exactly.
+4. Never submit code you cannot trace: if you generate C, the student must be
+   able to explain every line you kept.
+
+## Tier 2 AI rules (course policy)
+
+Permitted — helping with:
+
+- explaining compiler diagnostics / GCC-Clang warning flags
+- generating test input fixtures or Makefile templates
+- brainstorming algorithms (e.g., linked-list edge cases, save/load formats)
+
+Prohibited:
+
+- use on in-class quizzes, the midterm, or the final (Tier 0)
+- submitting unverified AI-generated C: unsafe patterns (bare `strcpy`,
+  missing null terminators, uninitialized dereferences, buffer overruns)
+  are the exact failure modes this course teaches — validate with the gates
+  above, and fix what the student fixes with you.
+
+## House rules
+
+- Keep the verification targets in the Makefile (`test`, `sanitize`, `valgrind`).
+- The student records **"AI used: none | Tier 2"** at the top of each milestone
+  write-up (`MILESTONE.md`) — help them be accurate, not evasive.
+- Do not modify `.forgejo/workflows/grade.yml`.
+- Write the milestone write-up in the student's voice, from their work — never
+  fabricate verification evidence that wasn't actually run.

MILESTONE.md

@@ -0,0 +1,51 @@
+# Milestone Write-up — M<N>: <milestone name>
+
+> Copy this file per milestone (e.g. `MILESTONE-M3.md`) and fill it in. The
+> flavor line below is required **every** milestone, not just the first.
+
+## Flavor
+
+(contacts book | gradebook | expense tracker) — same flavor for every milestone
+
+## AI used
+
+(none | Tier 2) — see `AGENTS.md` for what Tier 2 permits
+
+## What I built
+
+Which common-interface functions are now implemented, in my own words
+(e.g. "`list_append`/`list_find`/`list_remove` over a singly linked list, with
+`list_free` walking and freeing every node and record"). Name the files.
+
+## Verification evidence
+
+Paste the output of the gates for this milestone — and the CI report link from
+Forgejo Actions:
+
+```text
+make
+make test
+make sanitize     # ASan/UBSan (M5+)
+make valgrind     # 0 bytes lost (M5)
+```
+
+## Pre-tool prediction
+
+Before running the tool/CI: what did you predict would happen, and which test
+did you expect to fail? (If nothing failed — say what made you confident.)
+
+## Student-authored challenge case
+
+A test or scenario **you** wrote that the starter didn't cover (e.g. remove the
+head node, a 10k-record list, empty fields in save/load). What does it check
+and why does it matter?
+
+## Novel transfer
+
+A new use of what you built this milestone — apply the linked list / buffer /
+store to a different domain (e.g. "if the record were a todo item instead of a
+contact…") and sketch how your code would change.
+
+## Reflection
+
+What broke, what you learned, what you'd do differently next milestone.

Makefile

@@ -0,0 +1,45 @@
+# Record Manager — build, test, and verification targets.
+#
+# Best-practice references:
+#   - GNU Make automatic prerequisites: https://www.gnu.org/software/make/manual/html_node/Automatic-Prerequisites.html
+#   - GCC instrumentation (sanitizers):  https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html
+
+CC      ?= cc
+CFLAGS  ?= -std=c17 -Wall -Wextra -Wpedantic -Werror -g
+CPPFLAGS += -Iinclude -MMD -MP
+LDLIBS   ?=
+
+SRC := $(wildcard src/*.c)
+OBJ := $(SRC:src/%.c=build/%.o)
+DEP := $(OBJ:.o=.d)
+BIN := build/recman
+
+all: $(BIN)
+
+$(BIN): $(OBJ)
+	$(CC) $(CFLAGS) $^ -o $@ $(LDLIBS)
+
+build/%.o: src/%.c | build
+	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
+
+build:
+	mkdir -p build
+
+test: $(BIN)
+	sh tests/smoke.sh $(BIN)
+
+# ASan + UBSan — zero tolerance for memory and undefined-behavior errors.
+sanitize:
+	$(CC) $(CFLAGS) -fsanitize=address,undefined $(CPPFLAGS) $(SRC) -o build/recman_asan $(LDLIBS)
+	sh tests/smoke.sh build/recman_asan
+
+valgrind: $(BIN)
+	@command -v valgrind >/dev/null 2>&1 || { echo "error: valgrind not installed (see toolchain setup)"; exit 1; }
+	printf 'add Ada ada@x.io 555-0100\nlist\nquit\n' | valgrind --leak-check=full --show-leak-kinds=all --error-exitcode=1 $(BIN) >/dev/null
+
+clean:
+	rm -rf build
+
+-include $(DEP)
+
+.PHONY: all test sanitize valgrind clean

README.md

@@ -0,0 +1,51 @@
+# Record Manager — starter template
+
+Clean, best-practice starting point for the CS 2060 cumulative project.
+Pick a flavor (contacts / gradebook / expense tracker) and extend it milestone
+by milestone; do not delete the verification targets.
+
+**Before your first commit:** read [`SETUP.md`](SETUP.md) (toolchain) and
+[`AGENTS.md`](AGENTS.md) (the rules every coding agent reads), copy
+[`MILESTONE.md`](MILESTONE.md) per milestone as your write-up.
+
+## Layout
+
+```text
+include/record.h   the record_t struct + record_new/record_free + status codes
+src/record.c       record implementation
+src/main.c         CLI menu (Milestone 1)
+tests/smoke.sh     dependency-free smoke tests for the CLI
+Makefile           build + test + sanitizer targets
+.clang-format      enforced formatting (clang-format -i src/*.c include/*.h)
+```
+
+## Targets
+
+| Command | What it does |
+| :--- | :--- |
+| `make` | build `build/recman` (`-std=c17 -Wall -Wextra -Wpedantic -Werror -g`) |
+| `make test` | run the smoke tests |
+| `make sanitize` | rebuild with ASan+UBSan and run the smoke tests |
+| `make valgrind` | run under Valgrind Memcheck (leaks → non-zero exit) |
+| `make clean` | remove `build/` |
+
+## Style & best-practice references
+
+- **Formatting** — `.clang-format` (LLVM base, 4-space, 100 cols). Reference: <https://clang.llvm.org/docs/ClangFormatStyleOptions.html>
+- **Readable C** — Linux kernel coding style: <https://www.kernel.org/doc/html/latest/process/coding-style.html>
+- **Robust error handling** — return `status_t`, check it at the call site. Reference: SEI CERT C, API04-C / ERR33-C (<https://wiki.sei.cmu.edu/confluence/display/c/>)
+- **Build hygiene** — automatic header deps via `-MMD -MP`. Reference: GNU Make, Automatic Prerequisites (<https://www.gnu.org/software/make/manual/html_node/Automatic-Prerequisites.html>)
+- **Memory safety** — sanitizers + Valgrind. Reference: GCC Instrumentation Options (<https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html>)
+- **Course textbook** — Beej's Guide to C: <https://beej.us/guide/bgc/>
+
+## Milestones
+
+The five-milestone spec (M1 CLI → M2 buffer → M3 list → M4 file → M5 refactor)
+lives in `../README.md` (the `assignments/projects/` folder).
+
+## AI use (optional)
+
+AI assistance is **not required**. If you use it, the standard `AGENTS.md` in
+this repo tells the agent exactly what Tier 2 permits; state "AI used: none |
+Tier 2" at the top of each milestone write-up and let the verification gates
+(`make test` / `make sanitize` / `make valgrind` + the CI report) be the record.

SETUP.md

@@ -0,0 +1,41 @@
+# Setup — CS 2060 toolchain
+
+Everything required is **free**. Full detail (macOS/Replit paths, debugging
+setup, help sources): the course [`setup.md`](../setup.md).
+
+## 1. Editor + toolchain (the fast path)
+
+| Platform | What to install |
+| :--- | :--- |
+| Windows | **VS Code + WSL2** (the compiler lives in Linux): `wsl --install -d Ubuntu`, then in VS Code add the **Remote - WSL** extension and open this repo in WSL |
+| macOS | **VS Code** + `xcode-select --install` (gives `clang` + `make`) |
+| Linux | VS Code (or any editor) |
+
+**Windows: use WSL2, not Visual Studio/MSVC** — the autograder is Linux + GCC +
+`make` + Valgrind, and milestone 5 requires Valgrind (Linux-only).
+
+## 2. Compiler & tools (Linux / WSL2 / Codespaces)
+
+```bash
+sudo apt update && sudo apt install -y build-essential gcc clang make gdb valgrind git
+```
+
+## 3. Debugging in VS Code (gdb)
+
+1. Install the **C/C++ extension** (`ms-vscode.cpptools`).
+2. Open this folder (in WSL on Windows).
+3. Add `.vscode/tasks.json` (build: `make`) and `.vscode/launch.json` (gdb,
+   `program: ${workspaceFolder}/build/recman`, `preLaunchTask: make`) — the
+   course repo ships copies.
+4. **F5** → build + debug. No VS Code? Terminal: `gdb ./build/recman`, then
+   `break record_new`, `run`, `print r->name`, `backtrace`.
+
+## 4. Verify before you start
+
+```bash
+gcc --version && make --version && gdb --version && valgrind --version && git --version
+make && make test        # the starter must build and pass
+```
+
+If anything fails, fix the environment in week 1 — that's what office hours are
+for (CYBR A120-L).

include/record.h

@@ -0,0 +1,40 @@
+#ifndef RECORD_H
+#define RECORD_H
+
+#include <stddef.h>
+
+/*
+ * Uniform status codes. Every fallible function returns status_t; check it at
+ * the call site. STATUS_OK (0) always means success.
+ */
+typedef enum {
+    STATUS_OK = 0,
+    STATUS_ERR_ARG,      /* bad input / usage */
+    STATUS_ERR_NOMEM,    /* allocation failed */
+    STATUS_ERR_IO,       /* file or stream error */
+    STATUS_ERR_NOTFOUND, /* item not present */
+} status_t;
+
+/*
+ * One record. Pick a flavor and map the three fields:
+ *   contacts  -> name, email, phone
+ *   gradebook -> student, assignment, score
+ *   expenses  -> date, category, amount
+ */
+typedef struct record {
+    char *name;
+    char *field1;
+    char *field2;
+} record_t;
+
+/* Heap-allocate a record with deep copies of the strings (NULL/empty allowed).
+   Returns NULL on allocation failure. */
+record_t *record_new(const char *name, const char *field1, const char *field2);
+
+/* Free a record and its owned strings. */
+void record_free(record_t *rec);
+
+/* Human-readable name for a status code (never NULL). */
+const char *status_str(status_t s);
+
+#endif /* RECORD_H */

src/main.c

@@ -0,0 +1,82 @@
+/*
+ * Record Manager — entry point (Milestone 1).
+ *
+ * A menu-driven CLI for a simple record keeper. Pick a flavor (contacts,
+ * gradebook, or expense tracker) and add / list records. Later milestones add
+ * the linked list, text-file persistence, and search/sort.
+ */
+
+#include "record.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#define LINE_MAX 1024
+
+static void print_help(void);
+
+int main(void) {
+    char line[LINE_MAX];
+
+    print_help();
+    for (;;) {
+        printf("> ");
+        fflush(stdout);
+        if (fgets(line, sizeof(line), stdin) == NULL)
+            break;
+        line[strcspn(line, "\n")] = '\0';
+
+        if (strncmp(line, "add ", 4) == 0) {
+            char name[LINE_MAX], f1[LINE_MAX], f2[LINE_MAX];
+            char rest[LINE_MAX];
+            int n;
+            record_t *rec;
+
+            strncpy(rest, line + 4, sizeof(rest) - 1);
+            rest[sizeof(rest) - 1] = '\0';
+            n = sscanf(rest, "%1023s %1023s %1023s", name, f1, f2);
+            if (n < 2) {
+                printf("usage: add <name> <field1> [field2]\n");
+                continue;
+            }
+            rec = record_new(name, f1, (n >= 3) ? f2 : "");
+            if (rec == NULL) {
+                printf("error: %s\n", status_str(STATUS_ERR_NOMEM));
+                continue;
+            }
+            printf("added: %s | %s | %s\n", rec->name, rec->field1, rec->field2);
+            /* TODO(milestone 3): append `rec` to a linked list instead of freeing. */
+            record_free(rec);
+        } else if (strcmp(line, "list") == 0) {
+            printf("(list is empty — milestone 3 adds records)\n");
+        } else if (strncmp(line, "search", 6) == 0) {
+            printf("(search — milestone 5)\n");
+        } else if (strncmp(line, "delete", 6) == 0) {
+            printf("(delete — milestone 3)\n");
+        } else if (strncmp(line, "save", 4) == 0) {
+            printf("(save — milestone 4)\n");
+        } else if (strncmp(line, "load", 4) == 0) {
+            printf("(load — milestone 4)\n");
+        } else if (strcmp(line, "help") == 0) {
+            print_help();
+        } else if (strcmp(line, "quit") == 0 || strcmp(line, "exit") == 0) {
+            break;
+        } else if (line[0] != '\0') {
+            printf("unknown command '%s' — try 'help'\n", line);
+        }
+    }
+
+    return 0;
+}
+
+static void print_help(void) {
+    printf("Record Manager — commands:\n"
+           "  add <name> <field1> [field2]   add a record\n"
+           "  list                          list all records\n"
+           "  search <text>                 search records\n"
+           "  delete <name>                 delete a record\n"
+           "  save <file>                   save to a text file\n"
+           "  load <file>                   load from a text file\n"
+           "  help                          show this help\n"
+           "  quit                          exit\n");
+}

src/record.c

@@ -0,0 +1,60 @@
+#include "record.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static char *dup_str(const char *s) {
+    size_t n;
+    char *p;
+
+    if (s == NULL)
+        return NULL;
+    n = strlen(s) + 1;
+    p = malloc(n);
+    if (p != NULL)
+        memcpy(p, s, n);
+    return p;
+}
+
+record_t *record_new(const char *name, const char *field1, const char *field2) {
+    record_t *r = malloc(sizeof(*r));
+    if (r == NULL)
+        return NULL;
+
+    r->name = dup_str(name);
+    r->field1 = dup_str(field1);
+    r->field2 = dup_str(field2);
+
+    if ((name != NULL && r->name == NULL) || (field1 != NULL && r->field1 == NULL) ||
+        (field2 != NULL && r->field2 == NULL)) {
+        record_free(r);
+        return NULL;
+    }
+    return r;
+}
+
+void record_free(record_t *rec) {
+    if (rec == NULL)
+        return;
+    free(rec->name);
+    free(rec->field1);
+    free(rec->field2);
+    free(rec);
+}
+
+const char *status_str(status_t s) {
+    switch (s) {
+    case STATUS_OK:
+        return "ok";
+    case STATUS_ERR_ARG:
+        return "invalid argument";
+    case STATUS_ERR_NOMEM:
+        return "out of memory";
+    case STATUS_ERR_IO:
+        return "I/O error";
+    case STATUS_ERR_NOTFOUND:
+        return "not found";
+    default:
+        return "unknown error";
+    }
+}

tests/public/test_public.py

@@ -0,0 +1,32 @@
+"""Public tests for the Record Manager (M1: build + menu basics).
+
+These ship to students and run under the grade harness (pytest, cwd = the
+submission). M1 features only: add + list must work after `make` (delete/save/load come in
+later milestones — the hidden suite gates those).
+"""
+
+import pathlib
+import subprocess
+
+
+def _run(cmd, timeout=180, **kw):
+    return subprocess.run(cmd, capture_output=True, text=True, timeout=timeout, **kw)
+
+
+def test_m1_menu_basics():
+    root = pathlib.Path.cwd()
+    build = _run(["make", "-C", str(root), "-j2"])
+    assert build.returncode == 0, "BUILD FAILED:\n" + build.stdout + build.stderr
+    recman = root / "build" / "recman"
+    assert recman.exists(), "build/recman missing after make"
+
+    session = (
+        "add\nAda Lovelace\nada@x\n555-0100\n"
+        "add\nGrace Hopper\ngrace@x\n444-0200\n"
+        "list\n"
+        "quit\n"
+    )
+    r = _run([str(recman)], input=session)
+    assert "added: Ada Lovelace" in r.stdout, "add failed:\n" + r.stdout
+    assert "added: Grace Hopper" in r.stdout, "add failed:\n" + r.stdout
+    assert "Grace Hopper" in r.stdout, "list did not show the records:\n" + r.stdout

tests/smoke.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# Smoke test for the Record Manager CLI.
+# Usage: smoke.sh <path-to-binary>
+set -eu
+
+BIN="${1:-build/recman}"
+
+out=$(printf 'help\nadd Ada ada@x.io 555-0100\nquit\n' | "$BIN")
+
+echo "$out" | grep -q "Record Manager — commands"
+echo "$out" | grep -q "added: Ada"
+
+printf 'bogus\nquit\n' | "$BIN" | grep -q "unknown command"
+
+echo "smoke tests passed"