orchestra: TASK.md

TASK.md

@@ -1,24 +1,37 @@
-# Task 06G4WDJ06G7FK00QF73Z9DDBT4
+# Task 06G4W63545T3RV8SSKGKN11B3G
 
-Sort the check names in --list-checks
+Run a single named check with --only
 
 - Project: test-e2e
-- Source: gitea:test-e2e/27
+- Source: gitea:test-e2e/26
 - Priority: 0
 
 ## Instructions
 
-`--list-checks` prints the ten check names in the order they run. Add a `--sorted` modifier that prints them in alphabetical order instead, leaving run order untouched.
+Give scripts/orchestra_e2e_healthcheck.sh a `--only <name>` flag that runs a single named check instead of all ten, then prints the usual success line.
 
-Plan this as THREE phases:
+Behaviour:
 
-1. A helper that returns the check names in alphabetical order, with no caller yet.
-2. `--sorted` accepted alongside `--list-checks`, using that helper. Alone, `--sorted` changes nothing.
-3. The usage text in `--help`, and assertions in scripts/test_healthcheck.sh for both orders.
+- `--only repo_root_readable` runs that check alone and exits 0 when it passes.
+- `--only nonsense` prints `unknown check: nonsense` on stderr and exits 2.
+- `--only` composes with `--summary`, `--json` and `--quiet`, each keeping its current shape over the single result.
+- Without `--only`, every existing flag behaves exactly as it does today.
+
+Plan this as FIVE phases:
+
+1. A helper that resolves a name to a check function and reports whether the name is known.
+2. Flag parsing for `--only <name>`, with the unknown-name refusal and exit 2.
+3. Running the single resolved check and recording its result through the existing results state.
+4. Composition with `--summary` and `--json`.
+5. The usage text in `--help`, and assertions in scripts/test_healthcheck.sh for each behaviour above.
 
 ## Work one phase at a time
 
-Implement phase N, request its verification, and only then begin phase N+1.
+Implement phase N, request its verification, and only then begin phase N+1. Do not write the whole change first and verify the phases afterwards.
+
+## Every phase carries both kinds of check
+
+This is a hard requirement of this task. Each phase must have at least one automated check from the policy below. Each phase must also have at least one manual check, confirmed by a human reading the printed output. Orchestra runs the automated ones. A human owns the manual ones, and the phase is not finished until that human signs it off.
 
 ## Verification policy for this project
 
@@ -27,16 +40,21 @@ Only two commands may appear on a run: line, exactly:
 - ["bash", "-n", "<path>"]
 - ["bash", "scripts/orchestra_e2e_healthcheck.sh"]
 
-Anything else is refused when you seal the plan. Give every phase at least one automated check from that list and at least one manual check.
+Anything else is refused when you seal the plan.
 
 ## Research first
 
 Establish at least three findings with distinct confidence: at least one fact, one inference, one assumption.
 
+## Handoff behaviour
+
+Behave normally. If Orchestra asks you to write a handoff report, write it and stop.
+
 Acceptance:
-- `--list-checks --sorted` prints the ten names alphabetically.
-- `--list-checks` alone keeps run order.
-- Every other flag is unchanged.
+- `--only <name>` runs exactly one check.
+- An unknown name exits 2 with a message on stderr.
+- `--only` composes with `--summary`, `--json` and `--quiet`.
+- Every existing flag is unchanged when `--only` is absent.
 
 ## Completion
 

scripts/orchestra_e2e_healthcheck.sh

@@ -76,7 +76,7 @@ emit() {
 # usage <format>: the --help body. Also the source check_usage_text_mentions_every_flag
 # reads, so the flag list has exactly one home.
 usage() {
-  emit "$1" 'Usage: %s [--quiet] [--json] [--summary] [--timing] [--strict] [--list-checks] [--sorted]\n\n' "${0##*/}"
+  emit "$1" 'Usage: %s [--quiet] [--json] [--summary] [--timing] [--strict] [--list-checks]\n\n' "${0##*/}"
   emit "$1" 'Healthcheck script for Orchestra E2E tests.\n'
   emit "$1" 'Exits 0 with a success message if all checks pass.\n'
   emit "$1" '  --quiet  Suppress the success message; still exits 0.\n'
@@ -86,7 +86,6 @@ usage() {
   emit "$1" '  --timing Print elapsed milliseconds for the run.\n'
   emit "$1" '  --strict Reject an unrecognised flag: exits 2.\n'
   emit "$1" '  --list-checks  Print the name of each check; exits 0.\n'
-  emit "$1" '  --sorted  With --list-checks, list the names alphabetically.\n'
   emit "$1" '\nChecks:\n'
   local name
   for name in $CHECKS; do
@@ -95,12 +94,6 @@ usage() {
   emit "$1" '\nVersion: %s\n' "$VERSION"
 }
 
-# sorted_checks: the check names, one per line, in alphabetical order.
-# LC_ALL=C keeps the order fixed if a name with a digit or capital is added.
-sorted_checks() {
-  printf '%s\n' $CHECKS | LC_ALL=C sort
-}
-
 main() {
   local start_us
   start_us=$(now_us)
@@ -110,16 +103,16 @@ main() {
   local timing=
   local strict=
   local unknown=
-  local list=
-  local sorted=
   for arg in "$@"; do
     if [ "$arg" = --help ]; then
       usage text
       exit 0
     elif [ "$arg" = --list-checks ]; then
-      list=1
-    elif [ "$arg" = --sorted ]; then
-      sorted=1
+      local listed
+      for listed in $CHECKS; do
+        emit text '%s\n' "$listed"
+      done
+      exit 0
     elif [ "$arg" = --quiet ]; then
       quiet=1
     elif [ "$arg" = --json ]; then
@@ -135,15 +128,6 @@ main() {
     fi
   done
 
-  if [ -n "$list" ]; then
-    if [ -n "$sorted" ]; then
-      sorted_checks
-    else
-      printf '%s\n' $CHECKS
-    fi
-    exit 0
-  fi
-
   if [ -n "$strict" ] && [ -n "$unknown" ]; then
     printf 'unknown flag: %s\n' "$unknown" >&2
     exit 2

scripts/test_healthcheck.sh

@@ -7,7 +7,7 @@ NAMES='repo_root_readable scripts_dir_present healthcheck_executable_bit
 selftest_present test_healthcheck_present readme_present
 no_crlf_line_endings no_tabs_in_scripts
 shebang_is_bash usage_text_mentions_every_flag'
-USAGE="$(printf 'Usage: orchestra_e2e_healthcheck.sh [--quiet] [--json] [--summary] [--timing] [--strict] [--list-checks] [--sorted]\n\nHealthcheck script for Orchestra E2E tests.\nExits 0 with a success message if all checks pass.\n  --quiet  Suppress the success message; still exits 0.\n  --json   Print a single-line JSON result; still exits 0.\n  --help   Print this usage text and exit 0.\n  --summary  Print one line per check before the success message.\n  --timing Print elapsed milliseconds for the run.\n  --strict Reject an unrecognised flag: exits 2.\n  --list-checks  Print the name of each check; exits 0.\n  --sorted  With --list-checks, list the names alphabetically.\n\nChecks:\n  repo_root_readable\n  scripts_dir_present\n  healthcheck_executable_bit\n  selftest_present\n  test_healthcheck_present\n  readme_present\n  no_crlf_line_endings\n  no_tabs_in_scripts\n  shebang_is_bash\n  usage_text_mentions_every_flag\n\nVersion: 1.0.0')"
+USAGE="$(printf 'Usage: orchestra_e2e_healthcheck.sh [--quiet] [--json] [--summary] [--timing] [--strict] [--list-checks]\n\nHealthcheck script for Orchestra E2E tests.\nExits 0 with a success message if all checks pass.\n  --quiet  Suppress the success message; still exits 0.\n  --json   Print a single-line JSON result; still exits 0.\n  --help   Print this usage text and exit 0.\n  --summary  Print one line per check before the success message.\n  --timing Print elapsed milliseconds for the run.\n  --strict Reject an unrecognised flag: exits 2.\n  --list-checks  Print the name of each check; exits 0.\n\nChecks:\n  repo_root_readable\n  scripts_dir_present\n  healthcheck_executable_bit\n  selftest_present\n  test_healthcheck_present\n  readme_present\n  no_crlf_line_endings\n  no_tabs_in_scripts\n  shebang_is_bash\n  usage_text_mentions_every_flag\n\nVersion: 1.0.0')"
 fails=0
 
 check() { # check <expected-stdout> <label> [args...]
@@ -63,16 +63,6 @@ if [ "$listed" != "$want_listed" ]; then
   fails=$((fails + 1))
 fi
 
-# --sorted lists the names alphabetically, in either argument order.
-want_sorted=$(printf '%s\n' $NAMES | LC_ALL=C sort)
-for args in '--list-checks --sorted' '--sorted --list-checks'; do
-  sorted_out=$(bash "$HC" $args 2>/dev/null)
-  if [ "$sorted_out" != "$want_sorted" ]; then
-    printf 'FAIL: %s\n---got---\n%s\n---want---\n%s\n' "$args" "$sorted_out" "$want_sorted"
-    fails=$((fails + 1))
-  fi
-done
-
 # --summary prints one name: outcome line per check, then the success line.
 summary_out=$(bash "$HC" --summary 2>/dev/null)
 for name in $NAMES; do