fix(docs): ensure datasheet can use images properly (#125)

(cherry picked from commit 8132ad6ecc)

docs/typst/chapters/pinout.typ

@@ -1,8 +1,10 @@
+#import "../src/lib.typ": get_image_by_id
+
 = Pinout
 
 The chip is packaged in a 64-pin QFN package. The pinout is shown below.
 
-#align(center, image("../resources/images/tt-qfn-64.svg"))
+#align(center, get_image_by_id("images", "chip_pinout_qfn64"))
 
 Note: You will receive the chip mounted on a breakout board 
 (#link("https://github.com/tinytapeout/breakout-pcb")[github.com/tinytapeout/breakout-pcb]).

docs/typst/chapters/tt-multiplexer.typ

@@ -1,3 +1,5 @@
+#import "../src/lib.typ": get_image_by_id
+
 = The Tiny Tapeout Multiplexer
 == Overview
 The Tiny Tapeout Multiplexer distributes a single set of user IOs to multiple user designs. It is the backbone of the 
@@ -36,24 +38,17 @@ For instance, to select the design at address 12, you need to pulse `sel_rst_n`
 
 #figure(
   caption: [Mux signals for activating the design at address 12],
-
-  align(center)[
-    #image("../resources/images/mux_select_addr_12.svg")
-  ]
+  align(center, get_image_by_id("images", "mux_address_select_waveform"))
 )
 
 #figure(
   caption: [Mux Diagram],
-  align(center)[
-    #image("../resources/images/mux_diagram.svg", height: 55%)
-  ]
+  align(center, get_image_by_id("images", "mux_diagram", height: 55%))
 )
 
 #figure(
   caption: [Mux Controller Diagram],
-  align(center)[
-    #image("../resources/images/mux_controller.png")
-  ]
+  align(center, get_image_by_id("images", "mux_controller"))
 )
 
 Internally, the controller is just a chain of 10 D-flip-flops. The `sel_inc` signal is connected to the clock of the 

docs/typst/src/datasheet.typ

@@ -65,9 +65,9 @@
 
   let logo = box(baseline: 0.25em, {
     if invert_text_colour {
-      image("../resources/logos/tt-logo-white.svg", height: 25%)
+      get_image_by_id("logos", "tt_roundel_white", height: 25%)
     } else {
-      image("../resources/logos/tt-logo-black.svg", height: 25%)
+      get_image_by_id("logos", "tt_roundel_black", height: 25%)
     }
   })
 
@@ -246,7 +246,7 @@
   let pattern = tiling(
     size: (3cm, 3cm),
     spacing: (1cm, 1cm),
-    image("../resources/logos/tt-logo-light-grey.svg")
+    get_image_by_id("logos", "tt_roundel_light_grey")
   )
 
   page(
@@ -309,18 +309,18 @@
 
   // make titlepage
   if theme == "classic" {
-    image("../resources/logos/tt-logo-colourful.png")
+    get_image_by_id("logos", "tt_square_colourful")
     cover_text
 
   } else if theme == "bold" {
     set page(
-      background: image("../resources/backgrounds/colourful-background-gds-o10-bw.png", height: 100%),
+      background: get_image_by_id("backgrounds", "gds_bw_transparent", height: 100%),
       fill: selected_theme_colour
     )
 
     align(
       center + horizon,
-      image("../resources/logos/tt-logo-white.svg", height: 60%)
+      get_image_by_id("logos", "tt_roundel_white", height: 60%)
     )
 
     set text(white)
@@ -329,7 +329,7 @@
   } else if theme == "monochrome" {
     align(
       center + horizon,
-      image("../resources/logos/tt-logo-black.svg", height: 60%)
+      get_image_by_id("logos", "tt_roundel_black", height: 60%)
     )
     cover_text
   }

docs/typst/src/lib.typ

@@ -124,29 +124,14 @@
 
   // external manifest is used for artwork repo
   // since large photos would bloat the template size
-  let external_manifest = yaml("../resources/external/manifest.yaml")
-  let local_manifest = yaml("../resources/manifest.yaml")
-  let combined_manifest = (:)
+  let manifest = yaml("../resources/external/manifest.yaml")
 
-  // combine the two
-  for (k, v) in local_manifest.pairs() {
-    combined_manifest.insert(k, v)
+  if type not in manifest {
+    panic("type not in manifest")
   }
 
-  for (k, v) in external_manifest.pairs() {
-    combined_manifest.insert(k, v)
-  }
-
-  if type not in combined_manifest {
-    panic("type not in either local or external manifest")
-  }
-
-  let root_path = "../resources"
-  if type in external_manifest {
-    root_path += "/external"
-  }
-
-  let img_details = combined_manifest.at(type).at(id)
+  let root_path = "../resources/external"
+  let img_details = manifest.at(type).at(id)
 
   // make image
   image(root_path + "/" + type + "/" + img_details.file, ..args)