fix(qa): say that annotations.json limits is a non-empty string array

exploratory.md §4 gave the annotations shape as {evidence: [...], limits}
with 'checkpoints in limits', but never said what type limits is. The
materialize validator (lib/qa-evidence.ts) wants a non-empty array of
strings. In 11 of 15 qa-quick CI transcripts the agent's first
annotations.json wrote limits as an object, failed with 'need limits
(non-empty string array)', and spent a retry. The section now shows the
shape with a one-line example and says it is never an object. Shared by
/qa and /qa-only through the QA_EXPLORATORY resolver.

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

qa-only/sections/exploratory.md

@@ -100,7 +100,7 @@ with their failing contract and expected assertion; never create tests or freeze
 ## 4. Final report
 
 Use the surface report template; link each checkpoint. Separate browser scores, functional outcomes and proposed/executed tests.
-Write PROBE_DIR/annotations.json {evidence: [{capture, command, contract, expected, classification}], limits} (browser-only: evidence [], checkpoints in limits); before Markdown `bun EVIDENCE_TOOL materialize PROBE_DIR annotations.json` (fills observed/metadata; prints reportLinks; runs once per PROBE_DIR); you classify. Annotate every safe capture, including failures/replays: an omitted capture is withheld and keeps the verdict inconclusive. Classify a capture taken before an input change `superseded`; it closes when the same command reran on current inputs. Disclose withheld/incomplete evidence.
+Write PROBE_DIR/annotations.json {evidence: [{capture, command, contract, expected, classification}], limits: ["checkpoint 001"]} (limits: non-empty string array, not an object; browser-only: evidence []); before Markdown `bun EVIDENCE_TOOL materialize PROBE_DIR annotations.json` (fills observed/metadata; prints reportLinks; runs once per PROBE_DIR); you classify. Annotate every safe capture, including failures/replays: an omitted capture is withheld and keeps the verdict inconclusive. Classify a capture taken before an input change `superseded`; it closes when the same command reran on current inputs. Disclose withheld/incomplete evidence.
 Evidence is invocation-local.
 Missing prerequisites/expectations/observations, timeouts and refusal never pass.
 Pass requires all required current-input contracts to pass with no required remainder.

qa/sections/exploratory.md

@@ -85,7 +85,7 @@ Never freeze buggy output, weaken tests or delete valid red tests.
 ## 4. Final report
 
 Use the surface report template; link each checkpoint. Separate browser scores, functional outcomes and proposed/executed tests.
-Write PROBE_DIR/annotations.json {evidence: [{capture, command, contract, expected, classification}], limits} (browser-only: evidence [], checkpoints in limits); before Markdown `bun EVIDENCE_TOOL materialize PROBE_DIR annotations.json` (fills observed/metadata; prints reportLinks; runs once per PROBE_DIR); you classify. Annotate every safe capture, including failures/replays: an omitted capture is withheld and keeps the verdict inconclusive. Classify a capture taken before an input change `superseded`; it closes when the same command reran on current inputs. Disclose withheld/incomplete evidence.
+Write PROBE_DIR/annotations.json {evidence: [{capture, command, contract, expected, classification}], limits: ["checkpoint 001"]} (limits: non-empty string array, not an object; browser-only: evidence []); before Markdown `bun EVIDENCE_TOOL materialize PROBE_DIR annotations.json` (fills observed/metadata; prints reportLinks; runs once per PROBE_DIR); you classify. Annotate every safe capture, including failures/replays: an omitted capture is withheld and keeps the verdict inconclusive. Classify a capture taken before an input change `superseded`; it closes when the same command reran on current inputs. Disclose withheld/incomplete evidence.
 Evidence is invocation-local; /ship reruns once per invocation.
 Missing prerequisites/expectations/observations, timeouts and refusal never pass.
 Pass requires all required current-input contracts to pass with no required remainder.

scripts/resolvers/qa.ts

@@ -147,7 +147,7 @@ Never freeze buggy output, weaken tests or delete valid red tests.`}
 ## 4. Final report
 
 Use the surface report template; link each checkpoint. Separate browser scores, functional outcomes and proposed/executed tests.
-Write PROBE_DIR/annotations.json {evidence: [{capture, command, contract, expected, classification}], limits} (browser-only: evidence [], checkpoints in limits); before Markdown \`bun EVIDENCE_TOOL materialize PROBE_DIR annotations.json\` (fills observed/metadata; prints reportLinks; runs once per PROBE_DIR); you classify. Annotate every safe capture, including failures/replays: an omitted capture is withheld and keeps the verdict inconclusive. Classify a capture taken before an input change \`superseded\`; it closes when the same command reran on current inputs. Disclose withheld/incomplete evidence.
+Write PROBE_DIR/annotations.json {evidence: [{capture, command, contract, expected, classification}], limits: ["checkpoint 001"]} (limits: non-empty string array, not an object; browser-only: evidence []); before Markdown \`bun EVIDENCE_TOOL materialize PROBE_DIR annotations.json\` (fills observed/metadata; prints reportLinks; runs once per PROBE_DIR); you classify. Annotate every safe capture, including failures/replays: an omitted capture is withheld and keeps the verdict inconclusive. Classify a capture taken before an input change \`superseded\`; it closes when the same command reran on current inputs. Disclose withheld/incomplete evidence.
 Evidence is invocation-local${reportOnly ? '.' : '; /ship reruns once per invocation.'}
 Missing prerequisites/expectations/observations, timeouts and refusal never pass.
 Pass requires all required current-input contracts to pass with no required remainder.