Add Pheenix galvanics flyers and Sibert stamper prep specs

docs/equipment/pheenix-alpha/: the four Pheenix Alpha electroforming flyers
(2024: PASU silvering, PPPU pre-plating, PDPU dual-cell plating, PMPB
passivation bench), renamed from their download hashes.
docs/equipment/sibert/: the VSP, VSF and VSC technical specifications
(2021), plus Sibert's 2008-09 optical-disc SPS literature and the 2008
Blu-ray stamper characteristics paper in sps-optical-disc-2009/. Two
byte-identical duplicates in the download were dropped.

New docs/equipment/galvanics.md, the metal-path counterpart to
pressing-line.md: datasheet tables for both ranges and what they change.
Pheenix is a second turnkey galvanics vendor next to Digital Matrix and
can quote lacquer-to-record as one vendor; neither range includes water
treatment. Utilities from the sheets (~27 kVA connected per line, DI water,
12-20 C cooling water, extraction sizes), ~5.6 m2 of footprint, and a cell
count estimate (one PDPU at the low end, two at the high end). The Sibert
machines are single-phase, 200/250/600 kg on castors, centre manually and
list no data interface; the VSC locates on the punched hole; the finisher's
water carries nickel. Weights, cycle times, prices and mould fit are listed
as quote questions.

Backlinks and small updates: README (bullet, layout tree, vendor list),
roadmap items 6 and 23, vendor landscape, supplier map, exhibitor briefing
(on-file notes, Sibert three-phase question answered), digital factory
(Pheenix PLC data, Sibert data question, RFQ clause 5), quality automation
(hardness on the centre slug, BD paper as the acceptance-spec model),
sustainability (finisher water), total investment block label (numbers
unchanged), scale (galvanics feeder note), crane weight table, process
flow, pressing-line stamper-fit question, plant page detail lines.

docs/plant-operation.html

@@ -741,9 +741,9 @@ const DETAILS={
  audio:{t:'1 · Audio intake',w:'Files received from the label or artist. Checksums and format are verified and a technical QA pass checks levels, clipping and side length against the chosen format. Nothing is cut until the artist confirms the master plan (gate 1).',c:['File checksums and format verification','Technical QA: levels, clipping, side length vs format','Artist gate 1: master plan approved, recorded in traceability'],f:['1 to 2 working days','Rejects here are cheap; rejects later are not']},
  master:{t:'2 · Vinyl mastering',w:'The audio is mastered for the physical limits of the groove. Launch configuration uses an external engineer; the mature plant has its own room. The artist approves the vinyl master (gate 2) before anything is cut.',c:['Engineer QA of the vinyl master','Artist gate 2: master approved'],f:['2 to 4 days mature, 3 to 7 at launch','Mastering room ~40 to 60 m²']},
  cut:{t:'3 · Lathe cutting',w:'The master is cut into a nitrocellulose lacquer on the lathe. Grooves are 40 to 80 µm wide, ~28 µm deep, 200 to 350 per inch. The dead-wax matrix code and an angular fiducial are scribed cold; the lacquer is highly flammable, so never with a laser. This scribe propagates through every metal generation onto every record.',c:['Groove inspection under microscope','Test cut evaluation','Dead-wax matrix scribe and angular fiducial (mechanical cold scribe)'],f:['1 to 2 days','Lacquer must be plated within roughly 24 to 72 h, so cutting and plating stay in the same building']},
- silver:{t:'4a · Silvering',w:'The lacquer is sensitised and sprayed with silver to make its surface conductive, the first step of the metal path. Bath chemistry is logged per batch.',c:['Bath chemistry log per batch','Handled in the galvanics clean room with decontamination and PPE'],f:['Part of the 2 to 4 day galvanics block']},
- galv:{t:'4b · Electroforming: father, mother, stamper',w:'Nickel is electroformed onto the silvered lacquer to grow a father (negative), from which a mother (playable positive) and then stampers (negatives) are grown. In-house galvanics removes the overseas stamper dependency that bottlenecks most plants.',c:['Bath chemistry logs per batch','XRF nickel thickness per part (0.2 to 0.3 mm, TTV target 10 to 20 µm)','Confocal or profiler groove metrology on sampled radial zones','Mother listening check (mothers are playable)','Fiber-laser Data Matrix on every part back'],f:['2 to 4 days','Clean room + water treatment + chemical store ~80 to 150 m²','Zero contaminated water commitment']},
- prep:{t:'5 · Stamper prep',w:'The stamper is centre-punched, back-finished and coined to fit the press mold. Concentricity of the hole against the groove spiral is the critical check; an off-centre stamper makes every record wow.',c:['Concentricity and dimensional checks after punch, back-finish, coin','Visual inspection','Genealogy: stamper knows its mother, father and lacquer'],f:['1 day','Stamper prep room ~30 m²','Stampers last roughly 1,000 to 2,000 records']},
+ silver:{t:'4a · Silvering',w:'The lacquer is sensitised and sprayed with silver to make its surface conductive, the first step of the metal path. Bath chemistry is logged per batch.',c:['Bath chemistry log per batch','Handled in the galvanics clean room with decontamination and PPE'],f:['Part of the 2 to 4 day galvanics block','Candidate: Pheenix PASU, 4-nozzle spray (2024 flyer)']},
+ galv:{t:'4b · Electroforming: father, mother, stamper',w:'Nickel is electroformed onto the silvered lacquer to grow a father (negative), from which a mother (playable positive) and then stampers (negatives) are grown. In-house galvanics removes the overseas stamper dependency that bottlenecks most plants.',c:['Bath chemistry logs per batch','XRF nickel thickness per part (0.2 to 0.3 mm, TTV target 10 to 20 µm)','Confocal or profiler groove metrology on sampled radial zones','Mother listening check (mothers are playable)','Fiber-laser Data Matrix on every part back'],f:['2 to 4 days','Clean room + water treatment + chemical store ~80 to 150 m²','Zero contaminated water commitment','Candidates: Digital Matrix, or Pheenix PPPU pre-plate + PDPU, 2 cells at up to 200 A (flyers)']},
+ prep:{t:'5 · Stamper prep',w:'The stamper is centre-punched, back-finished and coined to fit the press mold. Concentricity of the hole against the groove spiral is the critical check; an off-centre stamper makes every record wow.',c:['Concentricity and dimensional checks after punch, back-finish, coin','Visual inspection','Genealogy: stamper knows its mother, father and lacquer'],f:['1 day','Stamper prep room ~30 m²','Stampers last roughly 1,000 to 2,000 records','Sibert VSP punch (manual centring at ×100), VSF wet back-finish, VSC coiner (2021 specs)']},
  archive:{t:'Mother archive',w:'Archived mothers make a repress the fastest and highest-margin job the plant takes: pull a fresh stamper, prep, press. No artist gates, 7 to 11 working days.',c:['Storage conditions and genealogy per traceability spec','Retention policy to be stated in the customer contract'],f:['Choose 3-step plating so a mother exists to go back to']},
  audioqc:{t:'QC layer 3 · Automated audio comparison, sampled',w:'A needle-drop capture station plays a sample and compares it to the source master by spectral envelope, counts clicks and pops, reads the noise floor from lead-in silence and channel balance from program RMS. It runs on every test pressing plus about one record in fifty, densifying as a stamper ages.',c:['Spectral-envelope comparison against the master (whole-program FFT fingerprint)','Click/pop detection and count','Noise floor and channel balance','Numeric score and pass/fail to traceability'],f:['Only this layer catches a wrong master, EQ errors, or pitch problems','100 % audio QC is impossible: one press outruns 80 to 95 listening stations']},
  carton:{t:'Cartons and sleeves from local partners',w:'Jackets and sleeves come from local carton partners (Ploy Printing as intended partner). Every delivery passes an incoming gate before it reaches assembly, and the packaging path often becomes the critical path when artwork lands late.',c:['Dimensions (records must fit without force, spine per title)','Print Delta E against the approved proof','Seam strength, board grammage, lamination','Inner sleeve scuff check'],f:['10 to 20 working days from approved artwork','Artwork deadline is effectively a fourth approval gate']},