feat(short): el ejemplo del prompt habla, y por eso los specs vuelven a hablar

La primera generación con narración viva narró 5 de 7 planos. La siguiente, ya
con la sección de presupuestos de ancho en el prompt, narró 1 de 8.

La causa no era la sección 3b sino la 5: el ejemplo trabajado — un spec completo
de 8 planos presentado como "el que produjo un buen vídeo" — no llevaba ni una
narración, porque es anterior a la voz. Contra esa señal de formato, una regla
en prosa que además dice "no todos los planos necesitan una" pierde siempre.

Ahora el ejemplo narra 6 de sus 8 y calla en los dos que dibujan una cita, donde
la voz sólo competiría con palabras que ya están en pantalla. Sus duraciones
suben para pagar lo que habla: un plano que se queda corto para su propia voz
enseñaría a infradeclarar, y el render no corta la voz, alarga el plano. La
ventana de silencio se recoloca porque seguía a document_quote por tiempo.

El aviso de ancho ya no cita el hueco de 16 caracteres de quote_a: shortsmith
envuelve esas citas en dos líneas y el presupuesto vivo es 31.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/generator/examples/jal1628.json

@@ -10,33 +10,61 @@
   },
   "audio": {
     "preset": "sonar",
-    "silence": [[31.0, 36.0]]
+    "silence": [
+      [
+        33.5,
+        38.5
+      ]
+    ]
   },
   "shots": [
     {
       "template": "radar_sweep",
-      "duration": 4.0,
+      "duration": 6.0,
       "props": {
         "headline": "3 RADARS",
         "subline": "1 UNEXPLAINED RETURN",
         "contact_bearing_deg": 210,
         "sweeps": 2
-      }
+      },
+      "narration": "Something pulled alongside a seven forty-seven over Alaska, and stayed there."
     },
     {
       "template": "track_map",
-      "duration": 4.0,
+      "duration": 5.5,
       "props": {
         "headline": "17 NOV 1986",
         "subline": "35,000 FT  ·  600 MPH",
         "waypoints": [
-          {"label": "FORT YUKON", "lat": 66.57, "lon": -145.27},
-          {"label": "FAIRBANKS",  "lat": 64.84, "lon": -147.72},
-          {"label": "TALKEETNA",  "lat": 62.32, "lon": -150.11},
-          {"label": "ANCHORAGE",  "lat": 61.22, "lon": -149.90}
-        ],
-        "bounds": {"lat_min": 60.4, "lat_max": 67.4, "lon_min": -152.0, "lon_max": -143.5}
+          {
+            "label": "FORT YUKON",
+            "lat": 66.57,
+            "lon": -145.27
+          },
+          {
+            "label": "FAIRBANKS",
+            "lat": 64.84,
+            "lon": -147.72
+          },
+          {
+            "label": "TALKEETNA",
+            "lat": 62.32,
+            "lon": -150.11
+          },
+          {
+            "label": "ANCHORAGE",
+            "lat": 61.22,
+            "lon": -149.9
           }
+        ],
+        "bounds": {
+          "lat_min": 60.4,
+          "lat_max": 67.4,
+          "lon_min": -152.0,
+          "lon_max": -143.5
+        }
+      },
+      "narration": "Nothing should have been able to hold station beside them up there."
     },
     {
       "template": "data_card",
@@ -44,13 +72,26 @@
       "props": {
         "card_title": "FLIGHT CREW",
         "rows": [
-          {"key": "CAPT. KENJU TERAUCHI", "value": "PILOT IN COMMAND"},
-          {"key": "EX-FIGHTER PILOT",     "value": "JASDF"},
-          {"key": "29 YEARS",             "value": "FLYING EXPERIENCE"},
-          {"key": "10,000+",              "value": "FLIGHT HOURS"}
+          {
+            "key": "CAPT. KENJU TERAUCHI",
+            "value": "PILOT IN COMMAND"
+          },
+          {
+            "key": "EX-FIGHTER PILOT",
+            "value": "JASDF"
+          },
+          {
+            "key": "29 YEARS",
+            "value": "FLYING EXPERIENCE"
+          },
+          {
+            "key": "10,000+",
+            "value": "FLIGHT HOURS"
+          }
         ],
         "footer": "REPORTS TWO LIGHTS PACING THE AIRCRAFT"
-      }
+      },
+      "narration": "The man reporting it flew fighters before he flew airliners."
     },
     {
       "template": "scale_bars",
@@ -58,7 +99,12 @@
       "props": {
         "headline": "REPORTED SCALE",
         "bars": [
-          {"label": "BOEING 747", "value": 232, "unit": "FT", "color": "ink"},
+          {
+            "label": "BOEING 747",
+            "value": 232,
+            "unit": "FT",
+            "color": "ink"
+          },
           {
             "label": "ESTIMATED OBJECT",
             "value": 2000,
@@ -67,7 +113,10 @@
             "value_label": "~1,600 – 2,000 FT"
           }
         ],
-        "quote": ["“TWICE THE SIZE OF", "AN AIRCRAFT CARRIER”"],
+        "quote": [
+          "“TWICE THE SIZE OF",
+          "AN AIRCRAFT CARRIER”"
+        ],
         "attribution": "— CAPT. TERAUCHI, ESTIMATE"
       }
     },
@@ -78,37 +127,60 @@
         "headline": "EVASIVE MANEUVER",
         "subline": "360° TURN   ·   −4,000 FT",
         "legend": [
-          {"label": "JAL 1628", "color": "ink"},
-          {"label": "UNIDENTIFIED CONTACT", "color": "amber"}
+          {
+            "label": "JAL 1628",
+            "color": "ink"
+          },
+          {
+            "label": "UNIDENTIFIED CONTACT",
+            "color": "amber"
+          }
         ],
         "caption": "CONTACT HOLDS RELATIVE POSITION",
         "turn_deg": 360
-      }
+      },
+      "narration": "He tried to shake it. Full circle, steep descent, and it was still there."
     },
     {
       "template": "signal_strips",
-      "duration": 7.0,
+      "duration": 6.0,
       "props": {
         "headline": "THREE INDEPENDENT SOURCES",
         "strips": [
           {
             "label": "ONBOARD RADAR",
             "sublabel": "CONTACT 7–8 NM · 10 O'CLOCK",
-            "markers": [0.26, 0.48, 0.63, 0.81]
+            "markers": [
+              0.26,
+              0.48,
+              0.63,
+              0.81
+            ]
           },
           {
             "label": "ANCHORAGE CENTER",
             "sublabel": "PRIMARY RETURNS THROUGH TURNS",
-            "markers": [0.26, 0.48, 0.63, 0.81]
+            "markers": [
+              0.26,
+              0.48,
+              0.63,
+              0.81
+            ]
           },
           {
             "label": "ELMENDORF ROCC",
             "sublabel": "TRACKED “FLIGHT OF TWO”",
-            "markers": [0.26, 0.48, 0.63, 0.81]
+            "markers": [
+              0.26,
+              0.48,
+              0.63,
+              0.81
+            ]
           }
         ],
         "footnote": "FAIRBANKS RADAR: NOTHING"
-      }
+      },
+      "narration": "He was not the only one seeing it. Though not everyone did."
     },
     {
       "template": "document_quote",
@@ -128,10 +200,14 @@
       "props": {
         "count_to": 1500,
         "count_label": "PAGES OF FAA DOCUMENTATION",
-        "lines": ["40 YEARS", "STILL OPEN"],
+        "lines": [
+          "40 YEARS",
+          "STILL OPEN"
+        ],
         "url": "THEEXCLUSIONZONE.COM",
         "show_mark": true
-      }
+      },
+      "narration": "The file was never closed. It was filed, and left where anyone can read it."
     }
   ]
 }

src/generator/shortspec.py

@@ -92,10 +92,10 @@ a card with four rows needs longer than a headline.
 SHORT, UPPERCASE, no trailing punctuation. A headline is 2-5 words.
 - **"CABE ~N caracteres dibujados" is a width, and it is the one limit nothing \
 will catch for you.** Nothing rejects a longer string: the renderer shrinks the \
-type until it fits, so a quote of 58 characters in a 16-character slot is drawn \
-at a quarter of its size and ends up the smallest text on a frame it was \
-supposed to dominate. Stay at or under N. On a quote that means picking a \
-shorter verbatim span, never squeezing the whole sentence in.
+type until it fits, so a string at twice its budget is drawn at a fraction of \
+its size and ends up the smallest text on a frame it was supposed to dominate. \
+Stay at or under N. On a quote that means picking a shorter verbatim span, \
+never squeezing the whole sentence in.
 - Respect every max length and list-length limit above. They are enforced.
 - Colours are palette names ({colors}) — never hex.
 - Quotes carry the typographic quote marks: “SPLIT RADAR IMAGE”, with U+201C \
@@ -127,8 +127,15 @@ punctuation, whole words. The on-screen props are terse and uppercase; the \
 narration is a person talking. Write "seventeenth of November" rather than \
 "17 NOV" — the voice reads exactly what you type, and it will say "one seven \
 N-O-V" if you make it.
-- Not every shot needs one. Silence over a single strong image is a choice, \
-and a wall of continuous talking is not.
+- **Most shots carry one.** The example narrates six of its eight and leaves \
+silent exactly the two that draw a quotation, where the voice would only be \
+competing with words already on the frame. Chosen silence is an edit; a spec \
+with one narrated shot out of eight is not a Short with a voice, it is a Short \
+that forgot to speak.
+- Narration costs seconds. A shot is never cut short to fit the voice — it \
+grows instead — so a line that needs six seconds in a four-second shot pushes \
+your whole total past the target. Write the line, then give the shot the time \
+the line actually takes.
 - Everything in section 4 applies to narration word for word. It is prose you \
 compose rather than a label you copy, which makes it the easiest place to \
 slip in a figure no source gave you — and it is checked exactly like the rest.
@@ -155,7 +162,8 @@ state the fact plainly.
 # 5. A worked example — FORMAT ONLY
 
 This is a case_file that produced a good video. Read it for shape: how long a \
-shot runs, how a headline is worded, how the shots build.
+shot runs, how a headline is worded, which shots speak and which stay silent, \
+how the shots build.
 
 It is not source material. Do not reuse its strings, figures, coordinates, \
 quotes or waypoints — not even if it covers the same case you were asked \

tests/test_shortspec.py

@@ -113,6 +113,38 @@ def test_prompt_includes_the_worked_example_in_full():
     assert "counter_close" in prompt
 
 
+def test_the_worked_example_narrates_most_of_its_shots():
+    """El ejemplo es la señal de formato más fuerte del prompt, más que cualquier
+    regla en prosa. Sin narración en él, el modelo escribía specs mudos aunque la
+    sección 3b le dijera lo contrario: en la primera generación tras añadir la voz
+    narró 1 de 8 planos. Si alguien vuelve a dejar el ejemplo mudo, esto salta.
+    """
+    example = json.loads(EXAMPLE.read_text())
+    shots = example["shots"]
+    spoken = [s for s in shots if s.get("narration")]
+
+    assert len(spoken) >= len(shots) * 0.6, "el ejemplo enseña a no narrar"
+
+    # Y el silencio del ejemplo es una decisión, no un olvido: calla justo donde
+    # la plantilla ya dibuja una cita.
+    silent = {s["template"] for s in shots if not s.get("narration")}
+    assert silent == {"scale_bars", "document_quote"}
+
+
+def test_the_worked_example_declares_time_for_its_own_narration():
+    """Un plano que se queda corto para su propia voz enseña a infradeclarar: el
+    render no corta la voz, alarga el plano, y el total se va del objetivo."""
+    from src.generator.spec_contract import NARRATION_CHARS_PER_SECOND
+
+    example = json.loads(EXAMPLE.read_text())
+    for i, shot in enumerate(example["shots"]):
+        narration = shot.get("narration", "")
+        if not narration:
+            continue
+        needs = len(narration) / NARRATION_CHARS_PER_SECOND
+        assert shot["duration"] >= needs, f"shot {i} declara menos de lo que habla"
+
+
 def test_prompt_says_out_loud_that_there_is_no_article_yet():
     w, _ = writer("{}")
     assert "No article URL yet" in w.build_prompt("X", "m", None, "X.TEST")